Clinical Research Directory

Recombinant Influenza Vaccine Versus Standard Egg-Based Inactivated Influenza Vaccine in Adults 18-64 Years

Sponsor: Centers for Disease Control and Prevention

Summary

This randomized, active comparator trial will compare the clinical efficacy of recombinant influenza vaccine (RIV) to standard-dose egg-based inactivated influenza vaccine (SD IIV) among adults aged 18-64 years. The primary study hypothesis is that the clinical efficacy of RIV is superior to that of SD IIV to prevent and attenuate influenza-like illness (ILI)-associated influenza virus infection. Relative efficacy will be assessed by comparing rates of ILI-associated reverse transcription polymerase chain reaction (RT-PCR)-confirmed influenza virus infection and measures of infection and illness attenuation among participants who receive RIV versus SD IIV. A secondary hypothesis is that humoral and cell-mediated immune responses to RIV are superior to responses to SD IIV. Relative immunogenicity will be assessed by comparing markers of humoral and cell-mediated immune responses post-vaccination among a subset of participants who receive RIV versus SD IIV.

Official title: Randomized Participant- and Investigator-Blinded Trial to Compare the Clinical Efficacy of Recombinant Influenza Vaccine to Standard Dose Egg-Based Inactivated Influenza Vaccine Among Adults Aged 18-64 Years in the United States

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Locations (4)