Trial Outcomes & Findings for Reverse Genetic H9N2 Influenza Vaccine Study in Adults (NCT NCT01320696)

NCT ID: NCT01320696

Last Updated: 2023-02-16

Results Overview

Recruitment status

COMPLETED

Study phase

PHASE1/PHASE2

Target enrollment

353 participants

Primary outcome timeframe

21 days after 2nd vaccination

Results posted on

2023-02-16

Participant Flow

Of the 353 enrolled participants, 275 met inclusion criteria and were randomized to treatment.

Participant milestones

Participant milestones
Measure
3.75 µg
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Overall Study
STARTED
56
55
54
55
55
Overall Study
Vaccinated Vacc. 1
56
55
54
55
55
Overall Study
Vaccinated Vacc. 2
53
53
54
55
54
Overall Study
COMPLETED
51
51
51
50
52
Overall Study
NOT COMPLETED
5
4
3
5
3

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Reverse Genetic H9N2 Influenza Vaccine Study in Adults

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Total
n=275 Participants
Total of all reporting groups
Age, Continuous
32.5 years
STANDARD_DEVIATION 8.6 • n=5 Participants
32.6 years
STANDARD_DEVIATION 8.7 • n=7 Participants
33.8 years
STANDARD_DEVIATION 8.1 • n=5 Participants
35.8 years
STANDARD_DEVIATION 9.3 • n=4 Participants
34.1 years
STANDARD_DEVIATION 9.0 • n=21 Participants
33.8 years
STANDARD_DEVIATION 8.8 • n=10 Participants
Sex: Female, Male
Female
33 Participants
n=5 Participants
27 Participants
n=7 Participants
31 Participants
n=5 Participants
31 Participants
n=4 Participants
29 Participants
n=21 Participants
151 Participants
n=10 Participants
Sex: Female, Male
Male
23 Participants
n=5 Participants
28 Participants
n=7 Participants
23 Participants
n=5 Participants
24 Participants
n=4 Participants
26 Participants
n=21 Participants
124 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
n=5 Participants
5 Participants
n=7 Participants
2 Participants
n=5 Participants
4 Participants
n=4 Participants
4 Participants
n=21 Participants
19 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
52 Participants
n=5 Participants
50 Participants
n=7 Participants
52 Participants
n=5 Participants
51 Participants
n=4 Participants
51 Participants
n=21 Participants
256 Participants
n=10 Participants
Ethnicity (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=10 Participants
Race (NIH/OMB)
American Indian or Alaska Native
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=10 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
2 Participants
n=7 Participants
2 Participants
n=5 Participants
2 Participants
n=4 Participants
1 Participants
n=21 Participants
8 Participants
n=10 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=10 Participants
Race (NIH/OMB)
Black or African American
9 Participants
n=5 Participants
7 Participants
n=7 Participants
11 Participants
n=5 Participants
9 Participants
n=4 Participants
11 Participants
n=21 Participants
47 Participants
n=10 Participants
Race (NIH/OMB)
White
45 Participants
n=5 Participants
45 Participants
n=7 Participants
41 Participants
n=5 Participants
44 Participants
n=4 Participants
42 Participants
n=21 Participants
217 Participants
n=10 Participants
Race (NIH/OMB)
More than one race
1 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
2 Participants
n=10 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=10 Participants

PRIMARY outcome

Timeframe: 21 days after 2nd vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=53 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=53 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With a Hemagglutination Inhibition (HI) Antibody Response to the Vaccine Strain (A/H9N2/Chicken/Hong Kong/G9/97) Associated With Seroconversion 21 Days After the Second Vaccination
27 Participants
27 Participants
38 Participants
41 Participants
48 Participants

PRIMARY outcome

Timeframe: 21 days after 2nd vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=53 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=53 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects Achieving an HI Antibody Titer >= 1:40 21 Days After the Second Vaccination
28 Participants
28 Participants
39 Participants
42 Participants
48 Participants

PRIMARY outcome

Timeframe: 7 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 1st vaccination : Mild
9 participants
10 participants
16 participants
17 participants
20 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 1st vaccination : Moderate
0 participants
0 participants
3 participants
0 participants
3 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 1st vaccination : Severe
0 participants
0 participants
0 participants
0 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 1st vaccination : Unknown
0 participants
0 participants
0 participants
1 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 2nd vaccination : Mild
6 participants
8 participants
14 participants
10 participants
18 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 2nd vaccination : Moderate
1 participants
0 participants
0 participants
2 participants
2 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 2nd vaccination : Severe
0 participants
0 participants
1 participants
0 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with injection site reactions within 7 days after 2nd vaccination : Unknown
0 participants
0 participants
0 participants
0 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 1st vaccination : Mild
6 participants
13 participants
12 participants
10 participants
11 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 1st vaccination: Moderate
0 participants
1 participants
2 participants
1 participants
2 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 1st vaccination : Severe
1 participants
0 participants
0 participants
0 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 1st vaccination : Unknown
0 participants
0 participants
0 participants
0 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 2nd vaccination : Mild
3 participants
3 participants
7 participants
4 participants
3 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 2nd vaccination: Moderate
1 participants
2 participants
0 participants
1 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 2nd vaccination : Severe
0 participants
0 participants
0 participants
0 participants
0 participants
Number of Subjects With Injection Site and Systemic Reactions Within 7 Days After the First and Second Vaccination (Vacc) by Severity
Number of subjects with systemic reactions within 7 days after 2nd vaccination : Unknown
0 participants
0 participants
0 participants
0 participants
0 participants

SECONDARY outcome

Timeframe: 21 days after 1st vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects Achieving an HI Antibody Titer >= 1:40 21 Days After the First Vaccination
17 Participants
22 Participants
33 Participants
35 Participants
40 Participants

SECONDARY outcome

Timeframe: 21 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Antibody Response Associated With Protection 21 Days After the First and Second Vaccination Defined as Microneutralization (MN) Titer >= 1:20
21 days after 1st vaccination
45 Participants
48 Participants
49 Participants
55 Participants
54 Participants
Number of Subjects With Antibody Response Associated With Protection 21 Days After the First and Second Vaccination Defined as Microneutralization (MN) Titer >= 1:20
21 days after 2nd vaccination
51 Participants
51 Participants
50 Participants
53 Participants
54 Participants

SECONDARY outcome

Timeframe: 21 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Antibody Response Associated With Protection 21 Days After the First and Second Vaccination Defined as Single Radial Hemolysis (SRH) Area >= 25 mm2
21 days after 1st vaccination
45 Participants
48 Participants
49 Participants
53 Participants
53 Participants
Number of Subjects With Antibody Response Associated With Protection 21 Days After the First and Second Vaccination Defined as Single Radial Hemolysis (SRH) Area >= 25 mm2
21 days after 2nd vaccination
49 Participants
52 Participants
51 Participants
52 Participants
54 Participants

SECONDARY outcome

Timeframe: 21 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Participants With Antibody Response 21 Days After the First and Second Vaccination Measured by HI, MN and SRH Assays
Antibody response 21 days after the 2nd vaccination : Measured by MN assay
49 Participants
49 Participants
49 Participants
51 Participants
53 Participants
Number of Participants With Antibody Response 21 Days After the First and Second Vaccination Measured by HI, MN and SRH Assays
Antibody response 21 days after the 1st vaccination : Measured by HI assay
16 Participants
21 Participants
32 Participants
35 Participants
40 Participants
Number of Participants With Antibody Response 21 Days After the First and Second Vaccination Measured by HI, MN and SRH Assays
Antibody response 21 days after the 1st vaccination : Measured by MN assay
40 Participants
44 Participants
47 Participants
52 Participants
53 Participants
Number of Participants With Antibody Response 21 Days After the First and Second Vaccination Measured by HI, MN and SRH Assays
Antibody response 21 days after the 1st vaccination : Measured by SRH area
30 Participants
39 Participants
35 Participants
42 Participants
42 Participants
Number of Participants With Antibody Response 21 Days After the First and Second Vaccination Measured by HI, MN and SRH Assays
Antibody response 21 days after the 2nd vaccination : Measured by HI assay
27 Participants
27 Participants
38 Participants
41 Participants
48 Participants
Number of Participants With Antibody Response 21 Days After the First and Second Vaccination Measured by HI, MN and SRH Assays
Antibody response 21 days after the 2nd vaccination : Measured by SRH area
35 Participants
42 Participants
38 Participants
43 Participants
44 Participants

SECONDARY outcome

Timeframe: 21 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Fold Increase of Antibody Response 21 Days After the First and Second Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured after 1st vaccination by HI assay
3.2 Fold Change in Antibody Response
Interval 2.5 to 4.1
4.5 Fold Change in Antibody Response
Interval 3.3 to 6.2
7.8 Fold Change in Antibody Response
Interval 5.8 to 10.5
10.4 Fold Change in Antibody Response
Interval 7.4 to 14.6
15.5 Fold Change in Antibody Response
Interval 11.7 to 20.5
Fold Increase of Antibody Response 21 Days After the First and Second Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured after 2nd vaccination by HI assay
5.7 Fold Change in Antibody Response
Interval 4.5 to 7.2
6.6 Fold Change in Antibody Response
Interval 5.0 to 8.7
10.7 Fold Change in Antibody Response
Interval 8.0 to 14.2
12.7 Fold Change in Antibody Response
Interval 9.7 to 16.8
19.8 Fold Change in Antibody Response
Interval 15.5 to 25.3
Fold Increase of Antibody Response 21 Days After the First and Second Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured after 1st vaccination by MN assay
8 Fold Change in Antibody Response
Interval 5.9 to 10.8
14.4 Fold Change in Antibody Response
Interval 10.3 to 20.3
18.9 Fold Change in Antibody Response
Interval 13.4 to 26.7
26.7 Fold Change in Antibody Response
Interval 19.3 to 36.8
44.1 Fold Change in Antibody Response
Interval 32.4 to 60.1
Fold Increase of Antibody Response 21 Days After the First and Second Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured after 2nd vaccination by MN assay
22.2 Fold Change in Antibody Response
Interval 17.2 to 28.6
25.5 Fold Change in Antibody Response
Interval 18.5 to 34.9
34.0 Fold Change in Antibody Response
Interval 25.2 to 45.9
38.9 Fold Change in Antibody Response
Interval 28.9 to 52.5
67.4 Fold Change in Antibody Response
Interval 51.1 to 88.8
Fold Increase of Antibody Response 21 Days After the First and Second Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured after 1st vaccination by SRH assay
2.7 Fold Change in Antibody Response
Interval 2.2 to 3.3
3.9 Fold Change in Antibody Response
Interval 3.0 to 4.9
3.2 Fold Change in Antibody Response
Interval 2.5 to 4.0
4.0 Fold Change in Antibody Response
Interval 3.2 to 5.1
5.1 Fold Change in Antibody Response
Interval 4.0 to 6.6
Fold Increase of Antibody Response 21 Days After the First and Second Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured after 2nd vaccination by SRH assay
3.7 Fold Change in Antibody Response
Interval 2.9 to 4.6
4.5 Fold Change in Antibody Response
Interval 3.5 to 5.8
3.7 Fold Change in Antibody Response
Interval 2.9 to 4.7
4.4 Fold Change in Antibody Response
Interval 3.5 to 5.6
5.5 Fold Change in Antibody Response
Interval 4.3 to 7.2

SECONDARY outcome

Timeframe: 21 days after 1st vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Seroconversion (as Defined for the Primary Immunogenicity Endpoint) Measured by HI Assay 21 Days After the First Vaccination as Compared to Baseline
16 Participants
21 Participants
32 Participants
35 Participants
40 Participants

SECONDARY outcome

Timeframe: 21 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Seroconversion Defined as a Minimum Fourfold Increase in Titer Measured by MN Assay 21 Days After the First and Second Vaccination as Compared to Baseline
Number of subjects with seroconversion 21 days after 1st vaccination
40 Participants
44 Participants
47 Participants
52 Participants
53 Participants
Number of Subjects With Seroconversion Defined as a Minimum Fourfold Increase in Titer Measured by MN Assay 21 Days After the First and Second Vaccination as Compared to Baseline
Number of subjects with seroconversion 21 days after 2nd vaccination
49 Participants
49 Participants
49 Participants
51 Participants
53 Participants

SECONDARY outcome

Timeframe: 21 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Seroconversion as Measured by SRH Assay 21 Days After the First and Second Vaccination
Number of subjects with seroconversion 21 days after the 1st vaccination
30 Participants
39 Participants
35 Participants
42 Participants
42 Participants
Number of Subjects With Seroconversion as Measured by SRH Assay 21 Days After the First and Second Vaccination
Number of subjects with seroconversion 21 days after the 2nd vaccination
35 Participants
42 Participants
38 Participants
43 Participants
44 Participants

SECONDARY outcome

Timeframe: 180 days after 1st vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Antibody Response Associated With Protection 180 Days After the First Vaccination as Measured by HI, MN and SRH Assays
Subjects with antibody response 180 days after the 1st vaccination as measured by HI Assay
10 Participants
17 Participants
22 Participants
28 Participants
31 Participants
Number of Subjects With Antibody Response Associated With Protection 180 Days After the First Vaccination as Measured by HI, MN and SRH Assays
Subjects with antibody response 180 days after the 1st vaccination as measured by MN Assay
38 Participants
43 Participants
45 Participants
49 Participants
52 Participants
Number of Subjects With Antibody Response Associated With Protection 180 Days After the First Vaccination as Measured by HI, MN and SRH Assays
Subjects with antibody response 180 days after the 1st vaccination as measured by SRH Assay
46 Participants
49 Participants
50 Participants
51 Participants
51 Participants

SECONDARY outcome

Timeframe: 180 days after 1st vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Antibody Response 180 Days After the First Vaccination Measured by HI, MN and SRH Assays
Subjects with antibody response 180 days after the 1st vaccination as measured by HI Assay
9 Participants
17 Participants
21 Participants
28 Participants
31 Participants
Number of Subjects With Antibody Response 180 Days After the First Vaccination Measured by HI, MN and SRH Assays
Subjects with antibody response 180 days after the 1st vaccination as measured by MN Assay
34 Participants
41 Participants
44 Participants
47 Participants
52 Participants
Number of Subjects With Antibody Response 180 Days After the First Vaccination Measured by HI, MN and SRH Assays
Subjects with antibody response 180 days after the 1st vaccination as measured by SRH Assay
30 Participants
43 Participants
36 Participants
43 Participants
40 Participants

SECONDARY outcome

Timeframe: 180 days after 1st vaccination

Outcome measures

Outcome measures
Measure
3.75 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=51 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=52 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Fold Increase of Antibody Response 180 Days After the First Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured by HI Assay
2.7 Fold change in Antibody Response
Interval 2.2 to 3.2
3.9 Fold change in Antibody Response
Interval 3.0 to 5.1
4.3 Fold change in Antibody Response
Interval 3.4 to 4.6
6.1 Fold change in Antibody Response
Interval 4.9 to 7.6
8.1 Fold change in Antibody Response
Interval 6.6 to 9.9
Fold Increase of Antibody Response 180 Days After the First Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured by MN Assay
5.4 Fold change in Antibody Response
Interval 4.2 to 7.0
9.1 Fold change in Antibody Response
Interval 6.5 to 12.7
10.3 Fold change in Antibody Response
Interval 7.9 to 13.3
13.3 Fold change in Antibody Response
Interval 10.3 to 17.2
19.9 Fold change in Antibody Response
Interval 15.4 to 25.8
Fold Increase of Antibody Response 180 Days After the First Vaccination as Compared to Baseline Measured by HI, MN and SRH Assays
Fold increase of antibody response measured by SRH Assay
3.4 Fold change in Antibody Response
Interval 2.7 to 4.3
4.5 Fold change in Antibody Response
Interval 3.5 to 5.8
3.7 Fold change in Antibody Response
Interval 2.9 to 4.7
4.5 Fold change in Antibody Response
Interval 3.5 to 5.7
5.1 Fold change in Antibody Response
Interval 4.0 to 6.6

SECONDARY outcome

Timeframe: 7 days after 1st and 2nd vaccination

Population: Participant number differs from 1st to 2nd vaccination due to dropouts

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Number of Subjects With Fever, Malaise and Shivering With Onset Within 7 Days After the First and Second Vaccination
After 1st vaccination : Fever
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Number of Subjects With Fever, Malaise and Shivering With Onset Within 7 Days After the First and Second Vaccination
After 1st vaccination : Malasie
1 Participants
2 Participants
2 Participants
1 Participants
2 Participants
Number of Subjects With Fever, Malaise and Shivering With Onset Within 7 Days After the First and Second Vaccination
After 1st vaccination : Shivering
0 Participants
3 Participants
0 Participants
0 Participants
2 Participants
Number of Subjects With Fever, Malaise and Shivering With Onset Within 7 Days After the First and Second Vaccination
After 2nd vaccination : Fever
0 Participants
0 Participants
0 Participants
0 Participants
1 Participants
Number of Subjects With Fever, Malaise and Shivering With Onset Within 7 Days After the First and Second Vaccination
After 2nd vaccination : Malasie
0 Participants
2 Participants
3 Participants
0 Participants
0 Participants
Number of Subjects With Fever, Malaise and Shivering With Onset Within 7 Days After the First and Second Vaccination
After 2nd vaccination : Shivering
1 Participants
0 Participants
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Through study completion by all subjects, an average of 181 days (+/- 14 days)

Outcome measures

Outcome measures
Measure
3.75 µg
n=56 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=55 Participants
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Frequency and Severity of Adverse Events (AEs) Observed During the Entire Study Period
Mild
25 Events
54 Events
67 Events
46 Events
64 Events
Frequency and Severity of Adverse Events (AEs) Observed During the Entire Study Period
Moderate
2 Events
5 Events
7 Events
4 Events
10 Events
Frequency and Severity of Adverse Events (AEs) Observed During the Entire Study Period
Severe
2 Events
0 Events
1 Events
0 Events
0 Events
Frequency and Severity of Adverse Events (AEs) Observed During the Entire Study Period
Unknown
0 Events
0 Events
0 Events
1 Events
0 Events

Adverse Events

3.75 µg

Serious events: 0 serious events
Other events: 15 other events
Deaths: 0 deaths

7.5 µg

Serious events: 0 serious events
Other events: 23 other events
Deaths: 0 deaths

15 µg

Serious events: 0 serious events
Other events: 27 other events
Deaths: 0 deaths

30 µg

Serious events: 0 serious events
Other events: 27 other events
Deaths: 0 deaths

45 µg

Serious events: 0 serious events
Other events: 28 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
3.75 µg
n=56 participants at risk
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
7.5 µg
n=55 participants at risk
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
15 µg
n=54 participants at risk
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
30 µg
n=55 participants at risk
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
45 µg
n=55 participants at risk
Subjects to receive 2 intramuscular injections of Reverse Genetic (RG) reassortant A/H9N2 influenza vaccine on Day 1 and Day 22
Musculoskeletal and connective tissue disorders
Myalgia
1.9%
1/53
1.9%
1/53
5.6%
3/54
0.00%
0/55
1.9%
1/54
Nervous system disorders
Headache
5.7%
3/53
1.9%
1/53
3.7%
2/54
7.3%
4/55
1.9%
1/54
General disorders
Injection Site Reactions
13.2%
7/53
15.1%
8/53
27.8%
15/54
21.8%
12/55
37.0%
20/54
General disorders
Fatigue
5.4%
3/56
16.4%
9/55
7.4%
4/54
3.6%
2/55
3.6%
2/55
General disorders
Malaise
0.00%
0/53
3.8%
2/53
5.6%
3/54
0.00%
0/55
0.00%
0/54
Investigations
Alanine aminotransferase increased
1.8%
1/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
0.00%
0/55
Investigations
Aspartate aminotransferase
1.8%
1/56
0.00%
0/55
1.9%
1/54
1.8%
1/55
0.00%
0/55
Gastrointestinal disorders
Abdominal pain upper
0.00%
0/56
1.8%
1/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
Gastrointestinal disorders
Diarrhoea
0.00%
0/56
1.8%
1/55
1.9%
1/54
0.00%
0/55
1.8%
1/55
General disorders
Asthenia
0.00%
0/56
1.8%
1/55
0.00%
0/54
0.00%
0/55
0.00%
0/55
General disorders
Chest pain
0.00%
0/56
1.8%
1/55
0.00%
0/54
0.00%
0/55
0.00%
0/55
General disorders
Chills
0.00%
0/56
3.6%
2/55
0.00%
0/54
0.00%
0/55
3.6%
2/55
General disorders
Hyperhidrosis
0.00%
0/53
0.00%
0/53
3.7%
2/54
0.00%
0/55
0.00%
0/54
General disorders
General pain
0.00%
0/56
1.8%
1/55
0.00%
0/54
0.00%
0/55
0.00%
0/55
Infections and infestations
Gastrointestinal viral infection
0.00%
0/56
1.8%
1/55
0.00%
0/54
0.00%
0/55
0.00%
0/55
Infections and infestations
Oral herpes
0.00%
0/56
0.00%
0/55
1.9%
1/54
0.00%
0/55
0.00%
0/55
Investigations
Neutrophil count decreased
0.00%
0/56
0.00%
0/55
1.9%
1/54
1.8%
1/55
1.8%
1/55
Investigations
White blood cell count decreased
0.00%
0/56
0.00%
0/55
1.9%
1/54
1.8%
1/55
0.00%
0/55
Musculoskeletal and connective tissue disorders
Arthralgia
1.9%
1/53
0.00%
0/53
1.9%
1/54
0.00%
0/55
0.00%
0/54
Gastrointestinal disorders
Nausea
0.00%
0/53
0.00%
0/53
1.9%
1/54
0.00%
0/55
0.00%
0/54
General disorders
Pyrexia
0.00%
0/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
General disorders
Feeling abnormal
0.00%
0/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
Investigations
Blood creatinine increased
0.00%
0/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
Respiratory, thoracic and mediastinal disorders
Cough
0.00%
0/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
Respiratory, thoracic and mediastinal disorders
Rhinorrhoea
0.00%
0/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
Respiratory, thoracic and mediastinal disorders
Throat irritation
0.00%
0/56
0.00%
0/55
0.00%
0/54
0.00%
0/55
1.8%
1/55
Eye disorders
Fatigue
1.9%
1/53
5.7%
3/53
5.6%
3/54
1.8%
1/55
3.7%
2/54
General disorders
Irritability
0.00%
0/53
0.00%
0/53
1.9%
1/54
0.00%
0/55
0.00%
0/54
Nervous system disorders
Dizziness
0.00%
0/53
0.00%
0/53
3.7%
2/54
0.00%
0/55
0.00%
0/54
Nervous system disorders
Dysgeusia
0.00%
0/53
0.00%
0/53
1.9%
1/54
0.00%
0/55
0.00%
0/54
Skin and subcutaneous tissue disorders
Rash generalised
0.00%
0/53
0.00%
0/53
0.00%
0/54
1.8%
1/55
0.00%
0/54
Investigations
Body temp increased
0.00%
0/56
0.00%
0/55
1.9%
1/54
0.00%
0/55
0.00%
0/55

Additional Information

Wael El-Amin, M.D.

Resilience Inc.

Phone: (240)885-1221

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place