Study to evaluate the safety and immunogenicity of pandemic monovalent (H5N1) influenza vaccines (whole virus formulation) in adults 18 and 60 years of age
Trial overview
To evaluate the humoral immune response induced by the study vaccines in term of anti-haemagglutinin antibody titers
Timeframe: At Days 0, 21, 42 and 180
To evaluate the humoral immune response induced by the study vaccines in terms of seroconversion rates (SCRs), Conversion factors and protection rates to H5N1 virus
Timeframe: At days 21, 42 and 180
Occurrence of solicited local and general adverse events
Timeframe: During a 7 day follow-up period (i.e. day of vaccination and 6 subsequent days) after each dose of vaccine and overall
Occurrence of unsolicited adverse events
Timeframe: During a 21 day follow-up period after the first vaccination and 30 day follow-up period after the second vaccination
Occurrence of serious adverse events
Timeframe: During the entire study (Days 0 to 180)
To evaluate the humoral immune response induced by the study vaccines in term of serum neutralizing antibody titers
Timeframe: At Days 0, 21, 42 and 180
To evaluate the cell-mediated immune response induced by the study vaccines in term of frequency of influenza-specific CD4/CD8 T lymphocytes
Timeframe: At days 0, 21, 42 and 180
To evaluate the humoral immune response induced by the study vaccines in terms of SCR for serum neutralizing antibody titers
Timeframe: At Days 21, 42 and 180
- Inclusion criteria:
- A male or female between, and including, 18 and 60 years of age at the time of the first vaccination.
- Inclusion criteria:
- A male or female between, and including, 18 and 60 years of age at the time of the first vaccination.
- Healthy subjects as established by medical history and clinical examination before entering into the study.
- If the subject is female, she must be of non-childbearing potential. Exclusion criteria:
- Administration of any vaccine during the period starting 15 days before the first administration of the study vaccine and ending 21 after the second one.
- Administration of an influenza vaccine other than the study vaccines during the entire study period.
- Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within six months prior to the first administration of the study vaccine.
- Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination
- History of hypersensitivity to vaccines.
- History of allergic disease or reactions likely to be exacerbated by any component of the vaccine.
- Acute clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests.
- Acute disease at the time of enrolment.
- Administration of immunoglobulins and/or any blood products within the three months preceding the first administration of the study vaccine or during the study.
- lactating women
- Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days prior to the first vaccination, or planned use during the study period.
Trial location(s)
Study documents
If you wish to request for full study report, please contact - [email protected]
Results overview
Refer to study documents
Plain language summaries
Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.