Efficacy Study of an Investigational Influenza Vaccine (Vero Cell Derived) to Prevent Culture Confirmed Influenza Infection (CCII)
Summary
The primary purpose of this study is to demonstrate the efficacy of an investigational Vero-cell derived influenza vaccine to prevent infection in an adult population with an influenza virus that is antigenically similar to one of the three strains in the vaccine. All subjects will be randomized to receive a single 0.5 ml intramuscular injection from one of three lots of seasonal Vero-cell derived influenza vaccine or saline placebo. Subjects will be monitored for 180 days following vaccination for occurrence of adverse events. For determining antibody response, subjects will have one blood draw before and one blood draw 21 days after vaccination.
Timeline
- Start
- 2007-11
- Primary completion
- 2008-06
- Completion
- 2008-06
Outcome
Met primary endpoint
paper Overall protective efficacy for antigenically matched influenza infection was 78·5% (95% CI 60·8-88·2). PMID 21329971 ↗
Publications
- Ehrlich HJ, Singer J, Berezuk G, Fritsch S, Aichinger G, Hart MK, El-Amin W, Portsmouth D, Kistner O, Barrett PN. A cell culture-derived influenza vaccine provides consistent protection against infection and reduces the duration and severity of disease in infected individuals. Clin Infect Dis. 2012 Apr;54(7):946-54. doi: 10.1093/cid/cir959. Epub 2012 Jan 19.
- Ehrlich HJ, Berezuk G, Fritsch S, Aichinger G, Singer J, Portsmouth D, Hart MK, El-Amin W, Kistner O, Barrett PN. Clinical development of a Vero cell culture-derived seasonal influenza vaccine. Vaccine. 2012 Jun 19;30(29):4377-86. doi: 10.1016/j.vaccine.2011.11.114. Epub 2011 Dec 13.
- Barrett PN, Berezuk G, Fritsch S, Aichinger G, Hart MK, El-Amin W, Kistner O, Ehrlich HJ. Efficacy, safety, and immunogenicity of a Vero-cell-culture-derived trivalent influenza vaccine: a multicentre, double-blind, randomised, placebo-controlled trial. Lancet. 2011 Feb 26;377(9767):751-9. doi: 10.1016/S0140-6736(10)62228-3. Epub 2011 Feb 15.
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Inactivated seasonal influenza vaccine (split virus, Vero cell-derived) | Vaccine | 0.5 ml | Intramuscular |