Phase 4
N=152
Age and Response to Flu Vaccines
Influenza · Influenza Immunisation
Bottom Line
View on ClinicalTrials.gov: NCT03328325 ↗Enrolled (actual)
152
Serious AEs
0.7%
Results posted
May 2021
Primary outcome: Primary: Magnitude of the Serum Antibody Response by Hemagglutination-inhibition (HAI) — 528 titer
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 4
- Interventions
- Influenza Virus Quadrivalent Inactivated Vaccine (Biological)
- Age
- Pediatric, Adult, Older Adult · 9+ yrs
- Sex
- All
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- Primary completion
- Feb 2020
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Magnitude of the Serum Antibody Response by Hemagglutination-inhibition (HAI) |
528 | — |
| PRIMARY Magnitude of the Serum Antibody Response by Microneutralization (MN) |
806 | — |
| PRIMARY Serum Antibody Response by Hemagglutination-inhibition (HAI) |
115 | — |
| PRIMARY Serum Antibody Response by Microneutralization (MN) |
1389 | — |
| PRIMARY Specificity of the Serum Antibody Response by Hemagglutination-inhibition (HAI) |
665 | — |
| PRIMARY Specificity of the Serum Antibody Response by Microneutralization (MN) |
2281 | — |
| SECONDARY Age at Time of First Influenza A Exposure |
— | — |
| SECONDARY Baseline B Cell Reactivity |
— | — |
| SECONDARY Vaccine History (Number and Percentage of Participants to Receive Vaccine) |
— | — |
Summary
The study will be designed as a prospective surveillance of the immune response to seasonal influenza vaccination in 240 healthy children and adults ages 9 and over. Study duration will be 5 years, with a participant duration of 6 months. Subjects will receive a quadrivalent inactivated influenza vaccine, at a dose of not less than 15 ug of hemagglutinin (HA), by intramuscular injection in open label fashion on day 0. Blood draws will occur at baseline, day 7, 28 and 90. The primary objective of this study is to evaluate the relationship between first influenza A virus exposure (inferred by age), vaccine history, and baseline serum antibody response to seasonal influenza vaccine in healthy adults and children.
Eligibility Criteria
Inclusion Criteria
- Aged equal to or greater than 9 years of age and weigh at least 50 pounds
- The subject must be in good health, as determined by: medical history; and targeted physical examination, when necessary, based on medical history. Stable medical or psychiatric condition is defined as: no recent increase in prescription medication, dose, or frequency of medication in the last 3 months and health outcomes of the specific disease are considered to be within acceptable limits in the last 6 months
- The subject is able to understand and comply with the planned study procedures, including being available for all study visits
- The subject/parent has provided informed consent/assent prior to any study procedures
- Subjects who have not received seasonal flu vaccine for the current year
Exclusion Criteria
- Subject report of known hypersensitivity to allergy to components of the study vaccine or other components of the study vaccine
- Subject report of known latex allergy
- Subject report of a history of severe reactions following previous immunization with licensed or unlicensed influenza virus vaccines
- Subject report of a history of Guillain-Barre syndrome within 6 weeks of receipt of a previous influenza vaccine
- The subject is a female of childbearing potential who is currently pregnant or breastfeeding or intends to become pregnant during the study period between enrollment and 90 days following receipt of vaccine. Pregnancy will be determined by subject interview. Pregnancy testing is not done in this study since there is no increased risk in pregnancy
- The subject is immunosuppressed as a result of an underlying illness or treatment with immunosuppressive or cytotoxic drugs, or use of anticancer chemotherapy or radiation therapy within the preceding 36 months
- The subject has an active neoplastic disease (excluding non-melanoma skin cancer or prostate cancer that is stable in the absence of therapy) or a history of any hematological malignancy. For this criterion, "active" is defined as having received treatment within the past 5 years
- Have taken high-dose inhaled corticosteroids within 30 days prior to study vaccination. High-dose defined as per age as using inhaled high dose per reference chart https://www.nhlbi.nih.gov/health-pro/guidelines/current/asthma-guidelines/quick-reference-html#estimated-comparative-daily-doses
- The subject received immunoglobulin or another blood product within the 3 months prior to enrollment in this study
- The subject has received an inactivated vaccine within the 2 weeks or a live vaccine within the 4 weeks prior to enrollment in this study or plans to receive another vaccine within the next 28 days after vaccination
- The subject has an acute or chronic medical condition that, in the opinion of the investigator or appropriate sub-investigator, would render vaccination unsafe or would interfere with the evaluation of responses. These conditions include any acute or chronic medical disease or conditions defined as persisting for 3 months (defined as 90 days) or longer, that would place the subject at an unacceptable risk of injury, render the subject unable to meet the requirements of the protocol, or may interfere with the evaluation of responses of the subject's successful completion of the study
- Subjects with an active infection or that has an acute illness or an oral temperature greater than 99.9 degrees Fahrenheit (37.7 degrees Celsius) within 3 days prior to enrollment or vaccination. Subjects who had an acute illness that was treated symptoms resolved are eligible to enroll as long as treatment is completed and symptoms resolved > 3 days prior to enrollment
- The subject is currently participating or plans to participate in a study that involves an experimental agent (vaccine, drug, biologic, device, blood product, or medication) or has received an experimental agent within 1 month prior to enrollment in this study, or expects to receive
Data sourced from ClinicalTrials.gov (NCT03328325). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.