Trial Outcomes & Findings for BARDA Securing Anthrax Immunity For the Elderly (NCT NCT03518125)

NCT ID: NCT03518125

Last Updated: 2020-07-21

Results Overview

Count of participants who experienced at least one of the following during the time frame specified on the arm which received the vaccination: injection site warmth, tenderness, itching, pain, restriction of range of arm motion, erythema/redness, palpable or observable lump, induration/swelling, or bruising.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

305 participants

Primary outcome timeframe

Day 1-8, Day 15-22, Day 29-36 (within 8 days of each vaccination, inclusive of the vaccination day)

Results posted on

2020-07-21

Participant Flow

469 participants were screened at 4 sites in the US between May 14, 2018 - November 8, 2018, of which 305 were randomized and vaccinated between May 17, 2018 - November 12, 2018.

Participant milestones

Participant milestones
Measure
Age ≥ 66 Years: BioThrax (Day 1, Day 15, and Day 29)
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Days 1, Day 15) With Placebo (Day 29)
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Overall Study
STARTED
50
50
49
52
52
52
Overall Study
COMPLETED
48
46
49
51
48
44
Overall Study
NOT COMPLETED
2
4
0
1
4
8

Reasons for withdrawal

Reasons for withdrawal
Measure
Age ≥ 66 Years: BioThrax (Day 1, Day 15, and Day 29)
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Days 1, Day 15) With Placebo (Day 29)
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Overall Study
Lost to Follow-up
0
2
0
0
3
5
Overall Study
Physician Decision
0
1
0
0
0
0
Overall Study
Withdrawal by Subject
1
1
0
1
1
3
Overall Study
Missed Day 394 Visit
1
0
0
0
0
0

Baseline Characteristics

BARDA Securing Anthrax Immunity For the Elderly

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Total
n=305 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
1 Participants
n=21 Participants
1 Participants
n=8 Participants
2 Participants
n=8 Participants
Age, Categorical
Between 18 and 65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
51 Participants
n=21 Participants
51 Participants
n=8 Participants
102 Participants
n=8 Participants
Age, Categorical
>=65 years
50 Participants
n=5 Participants
50 Participants
n=7 Participants
49 Participants
n=5 Participants
52 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
201 Participants
n=8 Participants
Age, Continuous
72.7 years
STANDARD_DEVIATION 5.89 • n=5 Participants
71.2 years
STANDARD_DEVIATION 4.76 • n=7 Participants
72.8 years
STANDARD_DEVIATION 4.88 • n=5 Participants
72.5 years
STANDARD_DEVIATION 5.04 • n=4 Participants
33.5 years
STANDARD_DEVIATION 9.46 • n=21 Participants
33.7 years
STANDARD_DEVIATION 9.55 • n=8 Participants
59.1 years
STANDARD_DEVIATION 19.63 • n=8 Participants
Sex/Gender, Customized
Gender · Female
28 Participants
n=5 Participants
29 Participants
n=7 Participants
27 Participants
n=5 Participants
31 Participants
n=4 Participants
29 Participants
n=21 Participants
29 Participants
n=8 Participants
173 Participants
n=8 Participants
Sex/Gender, Customized
Gender · Male
22 Participants
n=5 Participants
21 Participants
n=7 Participants
22 Participants
n=5 Participants
21 Participants
n=4 Participants
23 Participants
n=21 Participants
23 Participants
n=8 Participants
132 Participants
n=8 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
n=5 Participants
2 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
3 Participants
n=8 Participants
7 Participants
n=8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
49 Participants
n=5 Participants
48 Participants
n=7 Participants
48 Participants
n=5 Participants
50 Participants
n=4 Participants
51 Participants
n=21 Participants
48 Participants
n=8 Participants
294 Participants
n=8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
1 Participants
n=5 Participants
1 Participants
n=4 Participants
1 Participants
n=21 Participants
1 Participants
n=8 Participants
4 Participants
n=8 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
2 Participants
n=8 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
2 Participants
n=4 Participants
0 Participants
n=21 Participants
1 Participants
n=8 Participants
4 Participants
n=8 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Race (NIH/OMB)
Black or African American
4 Participants
n=5 Participants
2 Participants
n=7 Participants
3 Participants
n=5 Participants
2 Participants
n=4 Participants
6 Participants
n=21 Participants
3 Participants
n=8 Participants
20 Participants
n=8 Participants
Race (NIH/OMB)
White
46 Participants
n=5 Participants
46 Participants
n=7 Participants
46 Participants
n=5 Participants
47 Participants
n=4 Participants
45 Participants
n=21 Participants
47 Participants
n=8 Participants
277 Participants
n=8 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
1 Participants
n=21 Participants
1 Participants
n=8 Participants
2 Participants
n=8 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
0 Participants
n=8 Participants
0 Participants
n=8 Participants
Region of Enrollment
United States
50 participants
n=5 Participants
50 participants
n=7 Participants
49 participants
n=5 Participants
52 participants
n=4 Participants
52 participants
n=21 Participants
52 participants
n=8 Participants
305 participants
n=8 Participants

PRIMARY outcome

Timeframe: Day 1-8, Day 15-22, Day 29-36 (within 8 days of each vaccination, inclusive of the vaccination day)

Population: Safety population includes all randomized participants who received any amount of study vaccination.

Count of participants who experienced at least one of the following during the time frame specified on the arm which received the vaccination: injection site warmth, tenderness, itching, pain, restriction of range of arm motion, erythema/redness, palpable or observable lump, induration/swelling, or bruising.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Solicited Local Reactogenicity Symptoms
46 Participants
43 Participants
40 Participants
45 Participants
50 Participants
50 Participants

PRIMARY outcome

Timeframe: Day 1-8, Day 15-22, Day 29-36 (within 8 days of each vaccination, inclusive of the vaccination day)

Population: Safety population includes all randomized participants who received any amount of study vaccination.

Count of participants who experienced at least one of the following during the time frame specified on the arm which received the vaccination: fatigue, myalgia/muscle ache, headache, and fever.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Solicited Systemic Reactogenicity Symptoms
14 Participants
23 Participants
18 Participants
20 Participants
15 Participants
35 Participants

PRIMARY outcome

Timeframe: Day 64

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

The percentage of participants achieving seroprotection based on TNA NF50. A 70% probability of survival was associated with a TNA NF50 level of 0.56 in rabbits exposed to Bacillus anthracis, the bacteria that causes anthrax.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Seroprotection Based on Toxin Neutralization Antibody (TNA) 50% Neutralization Factor (NF50) Antibody Level, Defined as a TNA NF50 Antibody Level ≥0.56
7 Participants
37 Participants
19 Participants
40 Participants
22 Participants
23 Participants

SECONDARY outcome

Timeframe: Day 1 through Day 394

Population: Safety population includes all randomized participants who received any amount of study vaccination.

The count of participants who experienced at least one post-vaccination unsolicited AE (i.e. AEs not included in the solicited local and systemic adverse event list through Day 50 and those reported as a serious AE, medically attended adverse event (MAAE), or potentially immune-mediated medical condition (PIMMC) after Day 50).

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Treatment-emergent Unsolicited Adverse Events (AEs)
41 Participants
34 Participants
32 Participants
39 Participants
30 Participants
26 Participants

SECONDARY outcome

Timeframe: Day 1 through Day 394

Population: Safety population includes all randomized participants who received any amount of study vaccination.

The count of participants who experienced at least one post-vaccination SAE

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Treatment-emergent Serious Adverse Events (SAEs)
1 Participants
3 Participants
3 Participants
2 Participants
0 Participants
2 Participants

SECONDARY outcome

Timeframe: Day 1 through Day 394

Population: Safety population includes all randomized participants who received any amount of study vaccination.

Count of participants who experienced at least one adverse event that requires a visit to medical personnel, including hospital, emergency room, urgent care clinic, or other visits to or from medical personnel for any reason occurring post-vaccination.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Treatment-emergent Medically Attended Adverse Events (MAAEs)
27 Participants
23 Participants
21 Participants
23 Participants
13 Participants
14 Participants

SECONDARY outcome

Timeframe: Day 1 through Day 394

Population: Safety population includes all randomized participants who received any amount of study vaccination.

Count of participants who experienced at least one medical condition that was potentially immune mediated occurring post-vaccination

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Treatment-emergent Potentially Immune Mediated Medical Conditions (PIMMCs)
0 Participants
0 Participants
1 Participants
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Day 1-8, Day 15-22, Day 29-36 (within 8 days of each vaccination, inclusive of the vaccination day)

Population: Safety population includes all randomized participants who received any amount of study vaccination.

Count of participants who experienced at least one of the following during the time frame specified on the arm which did not receive the vaccination: injection site warmth, tenderness, itching, pain, restriction of range of arm motion, erythema/redness, palpable or observable lump, induration/swelling, or bruising.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Solicited Local Reactogenicity Symptoms on the Contralateral Arm
11 Participants
6 Participants
3 Participants
5 Participants
7 Participants
2 Participants

SECONDARY outcome

Timeframe: Days 1, 8, 22, 29, 36, 43, 50, 64, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

A higher TNA NF50 antibody level means a better immune response to the vaccine.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
TNA NF50 Antibody Levels
Day 1
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
TNA NF50 Antibody Levels
Day 8
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.03
.03 Titers
Interval 0.03 to 0.04
.03 Titers
Interval 0.03 to 0.03
TNA NF50 Antibody Levels
Day 22
.04 Titers
Interval 0.03 to 0.05
.25 Titers
Interval 0.14 to 0.45
.23 Titers
Interval 0.14 to 0.39
.10 Titers
Interval 0.07 to 0.14
.08 Titers
Interval 0.05 to 0.11
.67 Titers
Interval 0.48 to 0.95
TNA NF50 Antibody Levels
Day 29
.11 Titers
Interval 0.07 to 0.16
.77 Titers
Interval 0.49 to 1.2
.80 Titers
Interval 0.54 to 1.17
.12 Titers
Interval 0.08 to 0.16
.43 Titers
Interval 0.3 to 0.63
1.02 Titers
Interval 0.8 to 1.31
TNA NF50 Antibody Levels
Day 36
.36 Titers
Interval 0.25 to 0.52
2.92 Titers
Interval 1.9 to 4.48
.75 Titers
Interval 0.5 to 1.11
2.98 Titers
Interval 2.08 to 4.27
.84 Titers
Interval 0.6 to 1.16
1.06 Titers
Interval 0.82 to 1.38
TNA NF50 Antibody Levels
Day 43
.55 Titers
Interval 0.45 to 0.68
4.26 Titers
Interval 3.2 to 5.66
.69 Titers
Interval 0.47 to 1.02
6.73 Titers
Interval 5.19 to 8.72
.94 Titers
Interval 0.73 to 1.21
.94 Titers
Interval 0.72 to 1.21
TNA NF50 Antibody Levels
Day 50
.45 Titers
Interval 0.36 to 0.56
3.38 Titers
Interval 2.58 to 4.43
.60 Titers
Interval 0.41 to 0.88
5.30 Titers
Interval 4.12 to 6.81
.79 Titers
Interval 0.61 to 1.03
.84 Titers
Interval 0.64 to 1.1
TNA NF50 Antibody Levels
Day 64
.32 Titers
Interval 0.25 to 0.41
2.36 Titers
Interval 1.83 to 3.06
.44 Titers
Interval 0.29 to 0.64
3.42 Titers
Interval 2.63 to 4.43
.59 Titers
Interval 0.45 to 0.78
.69 Titers
Interval 0.53 to 0.89
TNA NF50 Antibody Levels
Day 85
.20 Titers
Interval 0.15 to 0.26
1.48 Titers
Interval 1.17 to 1.87
.30 Titers
Interval 0.2 to 0.45
2.08 Titers
Interval 1.59 to 2.71
.42 Titers
Interval 0.3 to 0.59
.53 Titers
Interval 0.4 to 0.7
TNA NF50 Antibody Levels
Day 181
.05 Titers
Interval 0.04 to 0.07
.37 Titers
Interval 0.28 to 0.48
.12 Titers
Interval 0.09 to 0.17
.34 Titers
Interval 0.24 to 0.46
.12 Titers
Interval 0.08 to 0.16
.23 Titers
Interval 0.17 to 0.32
TNA NF50 Antibody Levels
Day 394
.04 Titers
Interval 0.03 to 0.04
.14 Titers
Interval 0.1 to 0.2
.10 Titers
Interval 0.07 to 0.13
.09 Titers
Interval 0.07 to 0.12
.05 Titers
Interval 0.04 to 0.07
.16 Titers
Interval 0.11 to 0.23

SECONDARY outcome

Timeframe: Days 1, 8, 22, 29, 36, 43, 50, 64, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

A higher TNA ED50 antibody level means a better immune response to the vaccine.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 1
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 8
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
16.5 Titers
Interval 16.5 to 16.5
17.18 Titers
Interval 15.83 to 18.66
16.5 Titers
Interval 16.5 to 16.5
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 22
20.13 Titers
Interval 16.84 to 24.06
136.20 Titers
Interval 77.04 to 240.78
122.26 Titers
Interval 73.04 to 204.66
52.24 Titers
Interval 35.89 to 76.03
35.66 Titers
Interval 24.05 to 52.87
322.78 Titers
Interval 228.43 to 456.1
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 29
54.88 Titers
Interval 36.12 to 83.36
410.47 Titers
Interval 263.48 to 639.47
411.94 Titers
Interval 280.68 to 604.59
63.02 Titers
Interval 44.68 to 88.88
208.90 Titers
Interval 144.37 to 302.28
501.88 Titers
Interval 391.96 to 642.64
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 36
187.97 Titers
Interval 130.74 to 270.25
1557.95 Titers
Interval 1030.38 to 2355.64
389.79 Titers
Interval 262.37 to 579.07
1548.57 Titers
Interval 1102.91 to 2174.32
410.11 Titers
Interval 297.17 to 565.97
519.81 Titers
Interval 397.84 to 679.18
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 43
299.59 Titers
Interval 243.47 to 368.64
2135.14 Titers
Interval 1605.51 to 2839.48
361.30 Titers
Interval 245.67 to 531.35
3490.12 Titers
Interval 2737.94 to 4448.95
495.07 Titers
Interval 386.91 to 633.48
497.77 Titers
Interval 384.03 to 645.2
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 50
250.88 Titers
Interval 201.26 to 312.73
1658.94 Titers
Interval 1265.22 to 2175.19
315.10 Titers
Interval 214.65 to 462.54
2600.22 Titers
Interval 2035.57 to 3321.51
414.59 Titers
Interval 317.69 to 541.06
435.56 Titers
Interval 331.22 to 572.77
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 64
184.31 Titers
Interval 145.92 to 232.8
1240.66 Titers
Interval 976.7 to 1575.97
248.04 Titers
Interval 168.46 to 365.21
1771.46 Titers
Interval 1386.67 to 2263.02
321.15 Titers
Interval 241.54 to 427.0
363.05 Titers
Interval 279.48 to 471.62
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 85
85.20 Titers
Interval 63.6 to 114.11
650.14 Titers
Interval 511.93 to 825.65
136.72 Titers
Interval 93.76 to 199.38
902.39 Titers
Interval 689.72 to 1180.63
181.14 Titers
Interval 130.24 to 251.92
224.09 Titers
Interval 171.05 to 293.57
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 181
25.55 Titers
Interval 20.08 to 32.51
163.46 Titers
Interval 124.59 to 214.46
55.87 Titers
Interval 40.37 to 77.31
151.24 Titers
Interval 111.24 to 205.61
55.17 Titers
Interval 39.33 to 77.39
108.67 Titers
Interval 80.46 to 146.78
TNA Effective Dilution Resulting in 50% Neutralization (ED50) Antibody Levels
Day 394
18.29 Titers
Interval 16.52 to 20.24
74.48 Titers
Interval 52.5 to 105.68
49.63 Titers
Interval 35.44 to 69.49
50.29 Titers
Interval 37.22 to 67.97
27.46 Titers
Interval 20.16 to 37.39
76.66 Titers
Interval 52.84 to 111.21

SECONDARY outcome

Timeframe: Days 1, 8, 22, 29, 36, 43, 50, 64, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

A higher ELISA anti-PA IgG antibody level means a better immune response to the vaccine.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 1
4.64 Titers
Interval 4.64 to 4.64
4.78 Titers
Interval 4.49 to 5.09
4.64 Titers
Interval 4.64 to 4.64
4.91 Titers
Interval 4.51 to 5.34
4.64 Titers
Interval 4.64 to 4.64
4.64 Titers
Interval 4.64 to 4.64
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 8
4.64 Titers
Interval 4.64 to 4.64
4.77 Titers
Interval 4.5 to 5.07
4.64 Titers
Interval 4.64 to 4.64
4.96 Titers
Interval 4.49 to 5.48
4.78 Titers
Interval 4.49 to 5.09
4.64 Titers
Interval 4.64 to 4.64
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 22
6.06 Titers
Interval 4.78 to 7.68
37.28 Titers
Interval 22.32 to 62.27
40.33 Titers
Interval 25.68 to 63.36
10.26 Titers
Interval 7.19 to 14.62
19.61 Titers
Interval 12.91 to 29.77
80.66 Titers
Interval 58.31 to 111.57
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 29
29.84 Titers
Interval 19.12 to 46.58
124.04 Titers
Interval 84.6 to 181.85
138.17 Titers
Interval 97.23 to 196.34
11.98 Titers
Interval 8.29 to 17.31
106.64 Titers
Interval 75.8 to 150.02
139.82 Titers
Interval 112.5 to 173.79
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 36
75.98 Titers
Interval 52.39 to 110.2
347.86 Titers
Interval 243.34 to 497.29
134.15 Titers
Interval 94.1 to 191.25
232.20 Titers
Interval 165.79 to 325.21
180.58 Titers
Interval 131.55 to 247.9
135.86 Titers
Interval 109.84 to 168.05
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 43
118.55 Titers
Interval 91.81 to 153.09
493.50 Titers
Interval 382.46 to 636.78
122.18 Titers
Interval 87.02 to 171.55
504.56 Titers
Interval 394.48 to 645.35
211.41 Titers
Interval 164.67 to 271.43
120.44 Titers
Interval 96.47 to 150.36
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 50
100.39 Titers
Interval 77.25 to 130.45
417.04 Titers
Interval 323.71 to 537.28
104.99 Titers
Interval 74.97 to 147.03
418.50 Titers
Interval 330.55 to 529.85
170.18 Titers
Interval 131.18 to 220.79
107.84 Titers
Interval 86.93 to 133.77
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 64
69.71 Titers
Interval 53.58 to 90.7
334.57 Titers
Interval 259.73 to 430.97
80.74 Titers
Interval 58.9 to 110.69
312.36 Titers
Interval 246.2 to 396.3
124.79 Titers
Interval 95.68 to 162.77
81.47 Titers
Interval 65.02 to 102.08
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 85
43.50 Titers
Interval 33.31 to 56.82
208.58 Titers
Interval 162.53 to 267.69
48.40 Titers
Interval 35.84 to 65.36
195.23 Titers
Interval 154.55 to 246.62
67.78 Titers
Interval 51.26 to 89.63
50.33 Titers
Interval 40.58 to 62.43
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 181
9.43 Titers
Interval 7.16 to 12.42
42.60 Titers
Interval 32.44 to 55.92
11.70 Titers
Interval 8.86 to 15.44
36.95 Titers
Interval 28.22 to 48.37
17.43 Titers
Interval 12.76 to 23.81
17.90 Titers
Interval 13.83 to 23.16
Enzyme-linked Immunosorbent Assay (ELISA) Anti-protective Antigen (Anti-PA) Immunoglobulin G (IgG) Antibody Levels
Day 394
4.76 Titers
Interval 4.51 to 5.02
12.52 Titers
Interval 9.09 to 17.23
7.09 Titers
Interval 5.74 to 8.76
9.24 Titers
Interval 7.3 to 11.7
6.74 Titers
Interval 5.14 to 8.83
10.33 Titers
Interval 8.17 to 13.06

SECONDARY outcome

Timeframe: Days 1, 8, 22, 29, 36, 43, 50, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

The percentage of participants achieving seroprotection based on TNA NF50 antibody level. A 70% probability of survival was associated with a TNA NF50 level of 0.56 in rabbits exposed to Bacillus anthracis, the bacteria that causes anthrax.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 181
0 Participants
11 Participants
4 Participants
13 Participants
2 Participants
5 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 1
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 8
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 22
0 Participants
18 Participants
14 Participants
4 Participants
2 Participants
24 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 29
6 Participants
27 Participants
25 Participants
4 Participants
18 Participants
31 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 36
15 Participants
35 Participants
28 Participants
38 Participants
33 Participants
31 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 43
19 Participants
37 Participants
24 Participants
40 Participants
33 Participants
31 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 50
14 Participants
38 Participants
25 Participants
40 Participants
30 Participants
30 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 85
5 Participants
34 Participants
15 Participants
38 Participants
13 Participants
19 Participants
Seroprotection Based on TNA NF50, Defined as a TNA NF50 Antibody Level ≥0.56
Day 394
0 Participants
3 Participants
2 Participants
1 Participants
1 Participants
2 Participants

SECONDARY outcome

Timeframe: Days 8, 22, 29, 36, 43, 50, 64, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

The percentage of subjects obtaining seroconversion based on TNA NF50 antibody levels. Seroconversion represents the minimum intended effect of vaccination.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 22
1 Participants
22 Participants
19 Participants
10 Participants
7 Participants
31 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 8
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 29
9 Participants
30 Participants
34 Participants
9 Participants
30 Participants
37 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 36
28 Participants
37 Participants
33 Participants
39 Participants
37 Participants
37 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 43
38 Participants
38 Participants
32 Participants
41 Participants
40 Participants
37 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 50
34 Participants
39 Participants
30 Participants
41 Participants
37 Participants
36 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 64
27 Participants
39 Participants
27 Participants
41 Participants
35 Participants
35 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 85
17 Participants
39 Participants
23 Participants
41 Participants
32 Participants
35 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 181
4 Participants
26 Participants
12 Participants
27 Participants
8 Participants
19 Participants
Seroconversion Based on TNA NF50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 394
0 Participants
13 Participants
7 Participants
7 Participants
3 Participants
17 Participants

SECONDARY outcome

Timeframe: Days 8, 22, 29, 36, 43, 50, 64, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

The percentage of subjects obtaining seroconversion based on TNA ED50 antibody levels. Seroconversion represents the minimum intended effect of vaccination.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 8
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 22
1 Participants
22 Participants
20 Participants
11 Participants
6 Participants
32 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 29
8 Participants
30 Participants
34 Participants
10 Participants
29 Participants
36 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 36
29 Participants
37 Participants
34 Participants
40 Participants
38 Participants
37 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 43
37 Participants
38 Participants
32 Participants
41 Participants
41 Participants
37 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 50
34 Participants
39 Participants
31 Participants
41 Participants
37 Participants
36 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 64
29 Participants
39 Participants
32 Participants
41 Participants
36 Participants
36 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 85
15 Participants
38 Participants
22 Participants
40 Participants
31 Participants
32 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 181
3 Participants
24 Participants
8 Participants
25 Participants
7 Participants
18 Participants
Seroconversion Based on TNA ED50, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 394
0 Participants
12 Participants
8 Participants
7 Participants
3 Participants
13 Participants

SECONDARY outcome

Timeframe: Days 8, 22, 29, 36, 43, 50, 64, 85, 181, and 394

Population: Immunogenicity per protocol population (IPPP) includes all randomized participants who received a full dose of the correct vaccine at Days 1, 15, and 29 within the protocol specified windows, had determinate assay results at Day 64 (within window), and had no major protocol deviations that may have impacted immunogenicity assessments.

The percentage of subjects obtaining seroconversion based on ELISA anti-PA IgG antibody levels. Seroconversion represents the minimum intended effect of vaccination.

Outcome measures

Outcome measures
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=41 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=39 Participants
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=41 Participants
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=42 Participants
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=38 Participants
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 8
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 22
2 Participants
22 Participants
20 Participants
8 Participants
12 Participants
33 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 29
16 Participants
31 Participants
38 Participants
9 Participants
36 Participants
37 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 36
33 Participants
37 Participants
37 Participants
38 Participants
39 Participants
37 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 43
39 Participants
38 Participants
36 Participants
41 Participants
41 Participants
36 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 50
38 Participants
39 Participants
36 Participants
41 Participants
40 Participants
36 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 64
31 Participants
39 Participants
34 Participants
41 Participants
38 Participants
36 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 85
23 Participants
39 Participants
25 Participants
41 Participants
32 Participants
28 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 181
4 Participants
23 Participants
4 Participants
24 Participants
10 Participants
7 Participants
Seroconversion Based on ELISA Anti-PA IgG, Defined as a ≥4-fold Increase Over Pre-vaccination Levels, or a ≥4-fold Increase Over the Lower Limit of Quantification (LLOQ) if the Pre-vaccination Value is Below the LLOQ
Day 394
0 Participants
4 Participants
0 Participants
3 Participants
1 Participants
0 Participants

Adverse Events

Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)

Serious events: 1 serious events
Other events: 49 other events
Deaths: 0 deaths

Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)

Serious events: 3 serious events
Other events: 46 other events
Deaths: 0 deaths

Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)

Serious events: 3 serious events
Other events: 44 other events
Deaths: 0 deaths

Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)

Serious events: 2 serious events
Other events: 50 other events
Deaths: 0 deaths

Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)

Serious events: 0 serious events
Other events: 50 other events
Deaths: 0 deaths

Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)

Serious events: 2 serious events
Other events: 51 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 participants at risk
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 participants at risk
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 participants at risk
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 participants at risk
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 participants at risk
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 participants at risk
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
Blood and lymphatic system disorders
Anaemia
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Cardiac disorders
Acute myocardial infarction
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Hepatobiliary disorders
Cholecystitis
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Infections and infestations
Urinary tract infection
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Injury, poisoning and procedural complications
Femur fracture
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Injury, poisoning and procedural complications
Lumbar vertebral fracture
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Metabolism and nutrition disorders
Dehydration
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Non-small cell lung cancer metastatic
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Prostate cancer
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Pregnancy, puerperium and perinatal conditions
Abortion spontaneous
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
3.8%
2/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
Renal and urinary disorders
Renal failure
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
Respiratory, thoracic and mediastinal disorders
Pneumonia aspiration
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Vascular disorders
Deep vein thrombosis
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
Vascular disorders
Hypertension
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.

Other adverse events

Other adverse events
Measure
Age ≥ 66 Years: BioThrax (Day1, Day 15, Day 29)
n=50 participants at risk
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age ≥ 66 Years: AV7909 (Day 1, Day 15, Day 29)
n=50 participants at risk
Participants dosed intramuscularly (IM) on Days 1, 15, and 29 with 0.5 mL AV7909
Age ≥ 66 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=49 participants at risk
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5mL placebo
Age ≥ 66 Years: AV7909 (Day 1, Day 29) With Placebo (Day 15)
n=52 participants at risk
Participants dosed intramuscularly (IM) on Days 1 and 29 with 0.5 mL AV7909 and dosed IM on Day 15 with 0.5 mL placebo
Age 18-50 Years: BioThrax (Day 1, Day 15, Day 29)
n=52 participants at risk
Participants dosed subcutaneously (SC) on Days 1, 15, and 29 with 0.5 mL BioThrax
Age 18-50 Years: AV7909 (Day 1, Day 15) With Placebo (Day 29)
n=52 participants at risk
Participants dosed intramuscularly (IM) on Days 1 and 15 with 0.5 mL AV7909 and dosed IM on Day 29 with 0.5 mL placebo
General disorders
Injection site mass
76.0%
38/50 • Number of events 93 • From the first dose of study vaccine through Day 394.
20.0%
10/50 • Number of events 12 • From the first dose of study vaccine through Day 394.
10.2%
5/49 • Number of events 5 • From the first dose of study vaccine through Day 394.
23.1%
12/52 • Number of events 16 • From the first dose of study vaccine through Day 394.
71.2%
37/52 • Number of events 75 • From the first dose of study vaccine through Day 394.
15.4%
8/52 • Number of events 9 • From the first dose of study vaccine through Day 394.
General disorders
Injection site movement impairment
14.0%
7/50 • Number of events 10 • From the first dose of study vaccine through Day 394.
44.0%
22/50 • Number of events 31 • From the first dose of study vaccine through Day 394.
20.4%
10/49 • Number of events 17 • From the first dose of study vaccine through Day 394.
19.2%
10/52 • Number of events 13 • From the first dose of study vaccine through Day 394.
28.8%
15/52 • Number of events 30 • From the first dose of study vaccine through Day 394.
46.2%
24/52 • Number of events 32 • From the first dose of study vaccine through Day 394.
General disorders
Injection site pain
88.0%
44/50 • Number of events 152 • From the first dose of study vaccine through Day 394.
82.0%
41/50 • Number of events 126 • From the first dose of study vaccine through Day 394.
73.5%
36/49 • Number of events 77 • From the first dose of study vaccine through Day 394.
82.7%
43/52 • Number of events 91 • From the first dose of study vaccine through Day 394.
94.2%
49/52 • Number of events 191 • From the first dose of study vaccine through Day 394.
96.2%
50/52 • Number of events 138 • From the first dose of study vaccine through Day 394.
General disorders
Injection site pruritus
52.0%
26/50 • Number of events 48 • From the first dose of study vaccine through Day 394.
14.0%
7/50 • Number of events 9 • From the first dose of study vaccine through Day 394.
6.1%
3/49 • Number of events 3 • From the first dose of study vaccine through Day 394.
7.7%
4/52 • Number of events 6 • From the first dose of study vaccine through Day 394.
57.7%
30/52 • Number of events 60 • From the first dose of study vaccine through Day 394.
9.6%
5/52 • Number of events 7 • From the first dose of study vaccine through Day 394.
General disorders
Injection site warmth
52.0%
26/50 • Number of events 65 • From the first dose of study vaccine through Day 394.
42.0%
21/50 • Number of events 31 • From the first dose of study vaccine through Day 394.
22.4%
11/49 • Number of events 13 • From the first dose of study vaccine through Day 394.
28.8%
15/52 • Number of events 25 • From the first dose of study vaccine through Day 394.
51.9%
27/52 • Number of events 60 • From the first dose of study vaccine through Day 394.
25.0%
13/52 • Number of events 19 • From the first dose of study vaccine through Day 394.
Gastrointestinal disorders
Nausea
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
7.7%
4/52 • Number of events 4 • From the first dose of study vaccine through Day 394.
General disorders
Chills
0.00%
0/50 • From the first dose of study vaccine through Day 394.
4.0%
2/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
4.1%
2/49 • Number of events 2 • From the first dose of study vaccine through Day 394.
5.8%
3/52 • Number of events 3 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
3.8%
2/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
General disorders
Fatigue
18.0%
9/50 • Number of events 12 • From the first dose of study vaccine through Day 394.
34.0%
17/50 • Number of events 25 • From the first dose of study vaccine through Day 394.
28.6%
14/49 • Number of events 17 • From the first dose of study vaccine through Day 394.
26.9%
14/52 • Number of events 21 • From the first dose of study vaccine through Day 394.
19.2%
10/52 • Number of events 14 • From the first dose of study vaccine through Day 394.
40.4%
21/52 • Number of events 28 • From the first dose of study vaccine through Day 394.
General disorders
Injection site bruising
24.0%
12/50 • Number of events 14 • From the first dose of study vaccine through Day 394.
8.0%
4/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
14.3%
7/49 • Number of events 8 • From the first dose of study vaccine through Day 394.
5.8%
3/52 • Number of events 4 • From the first dose of study vaccine through Day 394.
17.3%
9/52 • Number of events 10 • From the first dose of study vaccine through Day 394.
13.5%
7/52 • Number of events 7 • From the first dose of study vaccine through Day 394.
General disorders
Injection site discolouration
8.0%
4/50 • Number of events 5 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
General disorders
Injection site erythema
68.0%
34/50 • Number of events 74 • From the first dose of study vaccine through Day 394.
26.0%
13/50 • Number of events 18 • From the first dose of study vaccine through Day 394.
14.3%
7/49 • Number of events 8 • From the first dose of study vaccine through Day 394.
13.5%
7/52 • Number of events 8 • From the first dose of study vaccine through Day 394.
51.9%
27/52 • Number of events 55 • From the first dose of study vaccine through Day 394.
9.6%
5/52 • Number of events 5 • From the first dose of study vaccine through Day 394.
General disorders
Injection site induration
68.0%
34/50 • Number of events 74 • From the first dose of study vaccine through Day 394.
30.0%
15/50 • Number of events 22 • From the first dose of study vaccine through Day 394.
14.3%
7/49 • Number of events 7 • From the first dose of study vaccine through Day 394.
21.2%
11/52 • Number of events 14 • From the first dose of study vaccine through Day 394.
55.8%
29/52 • Number of events 57 • From the first dose of study vaccine through Day 394.
23.1%
12/52 • Number of events 14 • From the first dose of study vaccine through Day 394.
General disorders
Pyrexia
0.00%
0/50 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
10.2%
5/49 • Number of events 5 • From the first dose of study vaccine through Day 394.
9.6%
5/52 • Number of events 6 • From the first dose of study vaccine through Day 394.
5.8%
3/52 • Number of events 3 • From the first dose of study vaccine through Day 394.
13.5%
7/52 • Number of events 8 • From the first dose of study vaccine through Day 394.
Infections and infestations
Bronchitis
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
3.8%
2/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
Infections and infestations
Upper respiratory tract infection
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
4.0%
2/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
14.3%
7/49 • Number of events 8 • From the first dose of study vaccine through Day 394.
9.6%
5/52 • Number of events 5 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
5.8%
3/52 • Number of events 3 • From the first dose of study vaccine through Day 394.
Infections and infestations
Urinary tract infection
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Injury, poisoning and procedural complications
Muscle strain
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
5.8%
3/52 • Number of events 4 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
Metabolism and nutrition disorders
Decreased appetite
0.00%
0/50 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
4.1%
2/49 • Number of events 2 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
Metabolism and nutrition disorders
Hypercholesterolaemia
0.00%
0/50 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Musculoskeletal and connective tissue disorders
Back pain
8.0%
4/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
6.1%
3/49 • Number of events 3 • From the first dose of study vaccine through Day 394.
5.8%
3/52 • Number of events 3 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
Musculoskeletal and connective tissue disorders
Musculoskeletal pain
4.0%
2/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
4.1%
2/49 • Number of events 2 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Musculoskeletal and connective tissue disorders
Myalgia
4.0%
2/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
22.0%
11/50 • Number of events 19 • From the first dose of study vaccine through Day 394.
16.3%
8/49 • Number of events 9 • From the first dose of study vaccine through Day 394.
25.0%
13/52 • Number of events 20 • From the first dose of study vaccine through Day 394.
15.4%
8/52 • Number of events 12 • From the first dose of study vaccine through Day 394.
50.0%
26/52 • Number of events 37 • From the first dose of study vaccine through Day 394.
Musculoskeletal and connective tissue disorders
Neck pain
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
2.0%
1/49 • Number of events 1 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Musculoskeletal and connective tissue disorders
Osteoarthritis
4.0%
2/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
8.0%
4/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
Musculoskeletal and connective tissue disorders
Pain in extremity
8.0%
4/50 • Number of events 4 • From the first dose of study vaccine through Day 394.
6.0%
3/50 • Number of events 3 • From the first dose of study vaccine through Day 394.
0.00%
0/49 • From the first dose of study vaccine through Day 394.
3.8%
2/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
0.00%
0/52 • From the first dose of study vaccine through Day 394.
3.8%
2/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
Nervous system disorders
Headache
22.0%
11/50 • Number of events 17 • From the first dose of study vaccine through Day 394.
36.0%
18/50 • Number of events 41 • From the first dose of study vaccine through Day 394.
12.2%
6/49 • Number of events 16 • From the first dose of study vaccine through Day 394.
32.7%
17/52 • Number of events 26 • From the first dose of study vaccine through Day 394.
23.1%
12/52 • Number of events 17 • From the first dose of study vaccine through Day 394.
50.0%
26/52 • Number of events 37 • From the first dose of study vaccine through Day 394.
Vascular disorders
Hypertension
0.00%
0/50 • From the first dose of study vaccine through Day 394.
2.0%
1/50 • Number of events 1 • From the first dose of study vaccine through Day 394.
8.2%
4/49 • Number of events 4 • From the first dose of study vaccine through Day 394.
3.8%
2/52 • Number of events 2 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.
1.9%
1/52 • Number of events 1 • From the first dose of study vaccine through Day 394.

Additional Information

Susan Hollingsworth/Regulatory Operations Specialist

BARDA

Phone: 202-691-2040

Results disclosure agreements

  • Principal investigator is a sponsor employee There is an agreement between the Principal Investigator and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed. Data and results are owned by Sponsor. Results can be used by Institution for (a) internal non-commercial research, education and patient care, and (b) as required under applicable laws and regulations. Other uses require prior written consent of Sponsor.
  • Publication restrictions are in place

Restriction type: OTHER