Trial Outcomes & Findings for Apnea in Hospitalized Preterm Infants Following the Administration of Routine Childhood Vaccines (NCT NCT03530124)

NCT ID: NCT03530124

Last Updated: 2024-02-14

Results Overview

Number of infants with ≥ 1 apneic event in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group, mITT Population Apnea was defined as a pause in respirations of \>20 seconds, or a pause in respirations of \>15 seconds with associated bradycardia (heart rate \<80 beats per minute for any duration occurring within 1 minute of the apnea event). Potential apnea events triggered by the cardiorespiratory monitors were manually reviewed by 2 neonatologists to verify the event. In uncommon situations in which manual review of a triggered event was not possible due to missing data, the triggered event was considered to be apnea.

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

223 participants

Primary outcome timeframe

48 hours

Results posted on

2024-02-14

Participant Flow

Participant milestones

Participant milestones
Measure
Vaccinated
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Overall Study
STARTED
107
116
Overall Study
COMPLETED
105
115
Overall Study
NOT COMPLETED
2
1

Reasons for withdrawal

Reasons for withdrawal
Measure
Vaccinated
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Overall Study
Withdrawal by Subject
0
1
Overall Study
Protocol Violation
1
0
Overall Study
Discharged prior to study completion
1
0

Baseline Characteristics

Data not collected on 6 participants.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Vaccinated
n=107 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Total
n=223 Participants
Total of all reporting groups
Age, Continuous
Gestational Age at Birth
27.3 Gestational Age in Weeks
n=107 Participants
27.7 Gestational Age in Weeks
n=116 Participants
27.6 Gestational Age in Weeks
n=223 Participants
Age, Customized
Age: <28 wks
60 Participants
n=107 Participants
61 Participants
n=116 Participants
121 Participants
n=223 Participants
Age, Customized
Age: >=28 wks
47 Participants
n=107 Participants
55 Participants
n=116 Participants
102 Participants
n=223 Participants
Age, Customized
Postmenstrual Age
36.6 Postmenstrual Age in Weeks
n=107 Participants
36.6 Postmenstrual Age in Weeks
n=116 Participants
36.6 Postmenstrual Age in Weeks
n=223 Participants
Age, Customized
Postnatal Age
8.7 Postnatal Age in Weeks
n=107 Participants
8.7 Postnatal Age in Weeks
n=116 Participants
8.7 Postnatal Age in Weeks
n=223 Participants
Sex: Female, Male
Female
57 Participants
n=107 Participants
60 Participants
n=116 Participants
117 Participants
n=223 Participants
Sex: Female, Male
Male
50 Participants
n=107 Participants
56 Participants
n=116 Participants
106 Participants
n=223 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
16 Participants
n=107 Participants
10 Participants
n=116 Participants
26 Participants
n=223 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
89 Participants
n=107 Participants
103 Participants
n=116 Participants
192 Participants
n=223 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants
n=107 Participants
3 Participants
n=116 Participants
5 Participants
n=223 Participants
Race/Ethnicity, Customized
White Only
55 Participants
n=107 Participants
66 Participants
n=116 Participants
121 Participants
n=223 Participants
Race/Ethnicity, Customized
Black Only
33 Participants
n=107 Participants
42 Participants
n=116 Participants
75 Participants
n=223 Participants
Race/Ethnicity, Customized
Other
19 Participants
n=107 Participants
8 Participants
n=116 Participants
27 Participants
n=223 Participants
Multiple Gestation
Single
73 Participants
n=107 Participants
84 Participants
n=116 Participants
157 Participants
n=223 Participants
Multiple Gestation
Twins
34 Participants
n=107 Participants
30 Participants
n=116 Participants
64 Participants
n=223 Participants
Multiple Gestation
Triplets
0 Participants
n=107 Participants
2 Participants
n=116 Participants
2 Participants
n=223 Participants
Birth Weight
940 Grams
n=107 Participants
1000 Grams
n=116 Participants
970 Grams
n=223 Participants
Insurance
Any Private
50 Participants
n=107 Participants
49 Participants
n=116 Participants
99 Participants
n=223 Participants
Insurance
Public
55 Participants
n=107 Participants
66 Participants
n=116 Participants
121 Participants
n=223 Participants
Insurance
None
2 Participants
n=107 Participants
1 Participants
n=116 Participants
3 Participants
n=223 Participants
Reason for Preterm Delivery
Hypertension/Preeclampsia/Hemolysis, Elevated Liver Enzymes, Low Platelet Count (HELLP)
30 Participants
n=107 Participants
25 Participants
n=116 Participants
55 Participants
n=223 Participants
Reason for Preterm Delivery
Preterm Labor/Premature Rupture
55 Participants
n=107 Participants
69 Participants
n=116 Participants
124 Participants
n=223 Participants
Reason for Preterm Delivery
Placental Abruption
12 Participants
n=107 Participants
12 Participants
n=116 Participants
24 Participants
n=223 Participants
Reason for Preterm Delivery
Fetal distress
18 Participants
n=107 Participants
22 Participants
n=116 Participants
40 Participants
n=223 Participants
Reason for Preterm Delivery
Other
25 Participants
n=107 Participants
29 Participants
n=116 Participants
54 Participants
n=223 Participants
Received Synagis During Study Period
Yes
0 Participants
n=107 Participants
1 Participants
n=116 Participants
1 Participants
n=223 Participants
Received Synagis During Study Period
No
107 Participants
n=107 Participants
115 Participants
n=116 Participants
222 Participants
n=223 Participants
Received Caffeine
Yes
98 Participants
n=102 Participants • Data not collected on 6 participants.
107 Participants
n=115 Participants • Data not collected on 6 participants.
205 Participants
n=217 Participants • Data not collected on 6 participants.
Received Caffeine
No
4 Participants
n=102 Participants • Data not collected on 6 participants.
8 Participants
n=115 Participants • Data not collected on 6 participants.
12 Participants
n=217 Participants • Data not collected on 6 participants.
Sibling Enrolled in Study
Yes
28 Participants
n=107 Participants
24 Participants
n=116 Participants
52 Participants
n=223 Participants
Sibling Enrolled in Study
No
79 Participants
n=107 Participants
92 Participants
n=116 Participants
171 Participants
n=223 Participants
Respiratory Support at Randomization
Continuous Positive Airway Pressure (CPAP)
17 Participants
n=106 Participants • Data not collected on 1 participant.
16 Participants
n=116 Participants • Data not collected on 1 participant.
33 Participants
n=222 Participants • Data not collected on 1 participant.
Respiratory Support at Randomization
Nasal Cannula
34 Participants
n=106 Participants • Data not collected on 1 participant.
46 Participants
n=116 Participants • Data not collected on 1 participant.
80 Participants
n=222 Participants • Data not collected on 1 participant.
Respiratory Support at Randomization
None
55 Participants
n=106 Participants • Data not collected on 1 participant.
54 Participants
n=116 Participants • Data not collected on 1 participant.
109 Participants
n=222 Participants • Data not collected on 1 participant.
Combination Vaccine Brand Administered
Pediarix
100 Participants
n=102 Participants • Collection of combination vaccine data were collected for the vaccinated arm only. Data not collected on 5 participants.
0 Participants
Collection of combination vaccine data were collected for the vaccinated arm only. Data not collected on 5 participants.
100 Participants
n=102 Participants • Collection of combination vaccine data were collected for the vaccinated arm only. Data not collected on 5 participants.
Combination Vaccine Brand Administered
Pentacel
2 Participants
n=102 Participants • Collection of combination vaccine data were collected for the vaccinated arm only. Data not collected on 5 participants.
0 Participants
Collection of combination vaccine data were collected for the vaccinated arm only. Data not collected on 5 participants.
2 Participants
n=102 Participants • Collection of combination vaccine data were collected for the vaccinated arm only. Data not collected on 5 participants.
Haemophilus influenzae type b Vaccine Brand Administered
ActHIB
98 Participants
n=100 Participants • Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
0 Participants
Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
98 Participants
n=100 Participants • Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
Haemophilus influenzae type b Vaccine Brand Administered
PedvaxHIB
1 Participants
n=100 Participants • Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
0 Participants
Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
1 Participants
n=100 Participants • Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
Haemophilus influenzae type b Vaccine Brand Administered
Hiberix
1 Participants
n=100 Participants • Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
0 Participants
Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
1 Participants
n=100 Participants • Collection of Haemophilus influenzae type b vaccine data were collected for the vaccinated arm only. Data not collected on 7 participants.
Hepatitis B Vaccine Brand Administered - Engerix-B
1 Participants
n=107 Participants • Collection of Hepatitis B vaccine data were collected for the vaccinated arm only.
0 Participants
Collection of Hepatitis B vaccine data were collected for the vaccinated arm only.
1 Participants
n=107 Participants • Collection of Hepatitis B vaccine data were collected for the vaccinated arm only.

PRIMARY outcome

Timeframe: 48 hours

Population: The mITT population includes any infant that was enrolled and randomized in the study.

Number of infants with ≥ 1 apneic event in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group, mITT Population Apnea was defined as a pause in respirations of \>20 seconds, or a pause in respirations of \>15 seconds with associated bradycardia (heart rate \<80 beats per minute for any duration occurring within 1 minute of the apnea event). Potential apnea events triggered by the cardiorespiratory monitors were manually reviewed by 2 neonatologists to verify the event. In uncommon situations in which manual review of a triggered event was not possible due to missing data, the triggered event was considered to be apnea.

Outcome measures

Outcome measures
Measure
Vaccinated
n=107 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Occurrence of Apnea
Yes
25 Participants
12 Participants
Occurrence of Apnea
No
80 Participants
104 Participants
Occurrence of Apnea
Missing
2 Participants
0 Participants

SECONDARY outcome

Timeframe: 48 hours

Population: The mITT population includes any infant that was enrolled and randomized in the study.

Average number of apneic episodes in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group.

Outcome measures

Outcome measures
Measure
Vaccinated
n=107 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Number of Apneic Episodes
2.72 Apneic Episodes
Standard Deviation 2.76
2.00 Apneic Episodes
Standard Deviation 1.76

SECONDARY outcome

Timeframe: 48 hours

Population: The mITT population includes any infant that was enrolled and randomized in the study.

Average duration of apneic episodes in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group.

Outcome measures

Outcome measures
Measure
Vaccinated
n=107 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Duration of Apneic Episodes
27.7 seconds
Standard Deviation 2.6
32.3 seconds
Standard Deviation 4.7

SECONDARY outcome

Timeframe: 48 hours

Population: The mITT population includes any infant that was enrolled and randomized in the study.

Proportion of infants requiring any increase in respiratory support in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group.

Outcome measures

Outcome measures
Measure
Vaccinated
n=107 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Increase in Respiratory Support
Yes
8 Participants
4 Participants
Increase in Respiratory Support
No
92 Participants
112 Participants
Increase in Respiratory Support
Missing
7 Participants
0 Participants

SECONDARY outcome

Timeframe: 48 hours

Population: mITT Analysis Population: Duke Site Only

Proportion of infants with severe ≥1 severe cardiorespiratory event in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group. Only severe apnea events in the mITT analysis window and only the severe bradycardia events in the mITT analysis window from Duke University. The monitor data were not viable at UNC and Cincinnati Children's Hospital. Duke data were adjudicated by neonatologists.

Outcome measures

Outcome measures
Measure
Vaccinated
n=39 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=42 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Severe Cardiorespiratory Events
Yes
7 Participants
8 Participants
Severe Cardiorespiratory Events
No
31 Participants
34 Participants
Severe Cardiorespiratory Events
Missing
1 Participants
0 Participants

SECONDARY outcome

Timeframe: 48 hours

Population: The mITT population includes any infant that was enrolled and randomized in the study.

Proportion of Infants Requiring Positive Pressure Ventilation in a 48-hour monitoring period after vaccination in the "vaccinated" group and a 48-hour monitoring period after randomization in the "unvaccinated" group.

Outcome measures

Outcome measures
Measure
Vaccinated
n=107 Participants
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 Participants
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Positive Pressure Ventilation
Yes
2 Participants
1 Participants
Positive Pressure Ventilation
No
104 Participants
115 Participants
Positive Pressure Ventilation
Missing
1 Participants
0 Participants

Adverse Events

Vaccinated

Serious events: 1 serious events
Other events: 32 other events
Deaths: 0 deaths

Unvaccinated

Serious events: 0 serious events
Other events: 20 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Vaccinated
n=107 participants at risk
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 participants at risk
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Respiratory, thoracic and mediastinal disorders
Hospital readmission for tachypnea
0.93%
1/107 • Number of events 1 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
0.00%
0/116 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
Eye disorders
Hospital readmission for retinopathy of prematurity
0.93%
1/107 • Number of events 1 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
0.00%
0/116 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
Surgical and medical procedures
Respiratory decompensation and hypotension following elective surgery
0.93%
1/107 • Number of events 1 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
0.00%
0/116 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.

Other adverse events

Other adverse events
Measure
Vaccinated
n=107 participants at risk
In the study arm, infants will receive PCV13, DTaP, HBV, IPV, and Hib vaccines within 12 hours of randomization. Infants will be monitored from time of vaccination to 48 hours post-vaccination for the occurrence of apnea, bradycardia and desaturation. PCV13: ACIP Recommended vaccine DTaP: ACIP Recommended vaccine HBV: ACIP Recommended vaccine IPV: ACIP Recommended vaccine Hib: ACIP Recommended vaccine
Unvaccinated
n=116 participants at risk
In the study arm, infants will not receive PCV13, DTaP, HBV, IPV, and Hib vaccines during the study. Infants will be monitored from randomization to 48 hours post-randomization for the occurrence of apnea, bradycardia and desaturation.
Cardiac disorders
Severe Cardiorespiratory Event
17.9%
7/39 • Number of events 39 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
19.0%
8/42 • Number of events 8 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
Respiratory, thoracic and mediastinal disorders
≥ 1 Apneic Event
23.4%
25/107 • Number of events 25 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.
10.3%
12/116 • Number of events 12 • Unvaccinated infants and vaccinated infants were followed for 48 hours for clinically important adverse events and serious adverse events. In addition, vaccinated infants were followed for 14 days after vaccination for clinically important adverse events and serious adverse events.
All clinically important adverse events (not including serious adverse event) outcome data were reported out within the study outcome measures.

Additional Information

Dr. Rachel Greenberg

Duke University

Phone: 919 668 4725

Results disclosure agreements

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