Dose-related safety and immunogenicity of a trivalent baculovirus-expressed influenza-virus hemagglutinin vaccine in elderly adults.

Treanor, John J; Schiff, Gilbert M; Couch, Robert B; Cate, Thomas R; Brady, Rebecca C; Hay, C Mhorag; Wolff, Mark; She, Dewei et al. · J Infect Dis · 2006

rct · Level II

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Abstract

Influenza-virus hemagglutinin (HA) protein expressed in insect cells by recombinant baculovirus is a candidate influenza vaccine. In a randomized, double-blind trial conducted in 399 adults > or = 65 years of age, the efficacy of trivalent inactivated influenza vaccine (TIV) licensed for intramuscular injection was compared with that of trivalent baculovirus-expressed HA vaccine administered at doses of 15 microg, 45 microg, or 135 microg of each HA. Compared with TIV, baculovirus-expressed HA vaccine was safe and induced better serum antibody responses to the H3 component when administered at doses of 45 microg or 135 microg of each HA. Baculovirus-expressed HA is a safe and immunogenic influenza vaccine in elderly adults.

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