- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00417560
Inactivated Influenza A/H5N1 Vaccine in Adult Subjects at Risk of Occupational Exposure to Live H5N1 Viruses
A Single Center, Open-label, Phase I/II Study of Two 90 Microgram Doses of Intramuscular Inactivated Influenza A/H5N1 Vaccine in Adult Subjects at Risk of Occupational Exposure to Live H5N1 Viruses
This is a single center, open-label, Phase I/II study in up to 100 adult subjects, aged 18 years and older who are at occupational risk of exposure to live H5N1 viruses. This study is designed to investigate the safety, reactogenicity, and immunogenicity of two 90 µg doses of an investigational inactivated influenza A/H5N1 virus vaccine given approximately 28 days apart. A blood sample will be collected for immunogenicity evaluation prior to each vaccination. Subjects will maintain a memory aid (appendix C4 and C13) to record oral temperature and systemic and local AEs for 7 days after immunization. Subjects will be encouraged to take their temperature around the same time each day. All subjects will receive a safety follow-up telephone call at 1 to 3 days after each vaccination (approximately Day 2) to elicit any AE and concomitant medication information. Subjects will return to the clinic 7 days after each vaccination for assessment of AEs and concomitant medications, a targeted physical examination (if indicated), and review of the memory aid. At approximately Day 28 after the first vaccination, subjects will return to the clinic for evaluation of vital signs, blood sample collection and safety follow-up, confirmation of eligibility criteria and a second vaccination. Safety follow-up will be identical to that performed after the first vaccination. At approximately Day 56 (or about 28 days after the second vaccination), subjects will return to the clinic for immunogenicity blood sample collection, AE and concomitant medication assessment, and targeted physical examination and vital sign assessment (if indicated). At approximately Day 180 (6 months after the first vaccination), subjects will return to the clinic for a final immunogenicity blood sample collection and safety assessment.
Blood samples collected prior to each vaccination (Days 0 and 28) and on Days 56 and 180 after the first vaccination will be tested at the CDC Influenza Division Laboratory for the levels of neutralizing and HAI antibodies and CMI responses.
The primary outcome measures will be the frequencies and severities of AEs and the GMTS and proportions of subjects who achieve 4-fold rises in serum neutralizing and HAI titers against the influenza A/H5N1 virus on Day 56. Serum HAI and neutralizing antibody responses (including frequencies of 4 fold or greater rise in titer; GMTs; and proportions of subjects achieving protective titers of neutralizing antibody 1 month and 6 months after first dose) will also be assessed. A secondary outcome measure will be CMI responses evaluated 1 month after the receipt of each dose of vaccine and 6 months after the receipt of the first dose of vaccine.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a single center, open-label, Phase I/II study in up to 100 adult subjects, aged 18 years and older who are at occupational risk of exposure to live H5N1 viruses. This study is designed to investigate the safety, reactogenicity, and immunogenicity of two 90 µg doses of an investigational inactivated influenza A/H5N1 virus vaccine given approximately 28 days apart. A blood sample will be collected for immunogenicity evaluation prior to each vaccination. Subjects will maintain a memory aid (appendix C4 and C13) to record oral temperature and systemic and local AEs for 7 days after immunization. Subjects will be encouraged to take their temperature around the same time each day. All subjects will receive a safety follow-up telephone call at 1 to 3 days after each vaccination (approximately Day 2) to elicit any AE and concomitant medication information. Subjects will return to the clinic 7 days after each vaccination for assessment of AEs and concomitant medications, a targeted physical examination (if indicated), and review of the memory aid. At approximately Day 28 after the first vaccination, subjects will return to the clinic for evaluation of vital signs, blood sample collection and safety follow-up, confirmation of eligibility criteria and a second vaccination. Safety follow-up will be identical to that performed after the first vaccination. At approximately Day 56 (or about 28 days after the second vaccination), subjects will return to the clinic for immunogenicity blood sample collection, AE and concomitant medication assessment, and targeted physical examination and vital sign assessment (if indicated). At approximately Day 180 (6 months after the first vaccination), subjects will return to the clinic for a final immunogenicity blood sample collection and safety assessment.
Blood samples collected prior to each vaccination (Days 0 and 28) and on Days 56 and 180 after the first vaccination will be tested at the CDC Influenza Division Laboratory for the levels of neutralizing and HAI antibodies and CMI responses.
The primary outcome measures will be the frequencies and severities of AEs and the GMTS and proportions of subjects who achieve 4-fold rises in serum neutralizing and HAI titers against the influenza A/H5N1 virus on Day 56. Serum HAI and neutralizing antibody responses (including frequencies of 4 fold or greater rise in titer; GMTs; and proportions of subjects achieving protective titers of neutralizing antibody 1 month and 6 months after first dose) will also be assessed. A secondary outcome measure will be CMI responses evaluated 1 month after the receipt of each dose of vaccine and 6 months after the receipt of the first dose of vaccine.
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
-
-
Georgia
-
Atlanta, Georgia, United States, 30333
- Centers for Disease Control and Prevention
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Non-pregnant
- Non-immune compromised adults 18 years and older
- At occupational risk of exposure to live H5N1 viruses
- Must be eligible for care by the CDC occupational health clinic
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Influenza A/H5N1 Vaccine
Two 90ug Doses of Intramuscular Inactivated Influenza A/H5N1 Vaccine
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The primary outcome measures will be the frequencies and severities of AEs and the GMTS and proportions of subjects who achieve 4-fold rises in serum neutralizing and HAI titers against the influenza A/H5N1 virus.
Time Frame: 28 days, 56 days, 180 days
|
28 days, 56 days, 180 days
|
Collaborators and Investigators
Investigators
- Principal Investigator: Carolyn Bridges, MD, Centers for Disease Control and Prevention
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CDC-NCIRD-5000
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Influenza
-
Novartis VaccinesCompletedInfluenza | Seasonal Influenza | Human Influenza | Influenza Due to Unspecified Influenza VirusBelgium
-
Gamaleya Research Institute of Epidemiology and...CompletedInfluenza A | Influenza A Virus Infection | Influenza Epidemic | Influenza H5N1Russian Federation
-
Vanderbilt University Medical CenterHuman Vaccines ProjectCompletedVaccine Reaction | Influenza | Influenza, Human | Influenza A | Influenza Type B | Influenza A H3N2 | Influenza A H1N1United States
-
NPO PetrovaxCompletedVaccine Reaction | Influenza | Influenza, Human | Influenza A | Acute Respiratory Infection | Influenza Type B | Flu | Influenza A H3N2 | Influenza A H1N1 | Flu, Human | Influenza EpidemicRussian Federation
-
National Institute of Allergy and Infectious Diseases...Completed
-
National Institute of Allergy and Infectious Diseases...Completed
-
National Institute of Allergy and Infectious Diseases...CompletedInfluenza Immunisation | Avian InfluenzaUnited States
-
National Institute of Allergy and Infectious Diseases...CompletedInfluenza | Influenza Immunisation | Avian InfluenzaUnited States
-
National Institute of Allergy and Infectious Diseases...CompletedInfluenza Immunisation | Avian InfluenzaUnited States
-
National Institute of Allergy and Infectious Diseases...National Institutes of Health (NIH)CompletedInfluenza AUnited States
Clinical Trials on inactivated influenza A/H5N1 vaccine
-
National Institute of Allergy and Infectious Diseases...Completed
-
Sanofi Pasteur, a Sanofi CompanyCompletedOrthomyxoviridae Infections | Pandemic Influenza | Influenza A Virus InfectionBelgium
-
Sanofi Pasteur, a Sanofi CompanyCompletedInfluenza | Orthomyxoviridae Infections | Influenza A Virus InfectionThailand
-
National Institute of Allergy and Infectious Diseases...Completed
-
National Institute of Allergy and Infectious Diseases...Completed
-
National Institute of Allergy and Infectious Diseases...Completed
-
Sanofi Pasteur, a Sanofi CompanyCompletedInfluenza | Orthomyxoviridae Infections | Orthomyxovirus InfectionsFinland
-
National Institute of Allergy and Infectious Diseases...Completed
-
Sanofi Pasteur, a Sanofi CompanyCompletedInfluenza | Orthomyxoviridae InfectionsBelgium, United Kingdom
-
PATHInstitute of Experimental Medicine, Russia; Research Institute of Influenza...Completed