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  • Title: Subunit influenza vaccines produced from cell culture or in embryonated chicken eggs: comparison of safety, reactogenicity, and immunogenicity.
    Author: Reisinger KS, Block SL, Izu A, Groth N, Holmes SJ.
    Journal: J Infect Dis; 2009 Sep 15; 200(6):849-57. PubMed ID: 19673652.
    Abstract:
    BACKGROUND: This study assessed the safety, reactogenicity, and immunogenicity of an injectable cell culture-derived influenza vaccine (CCIV), compared with those of an injectable egg-based trivalent inactivated influenza vaccine (TIV). METHODS: Adult subjects (n = 613; 18 to <50 years of age) were randomized (1:1) to receive either CCIV or TIV. The safety and reactogenicity of the 2 vaccines were assessed on the basis of solicited indicators and other adverse events (AEs) within 7 days of vaccination. All serious AEs and those AEs resulting in withdrawal were recorded throughout the study. Antibody titers were determined by the hemagglutination inhibition assay, using egg- and cell-derived antigens. Immunogenicity was assessed on the basis of the ratio of postvaccination (day 22) geometric mean titers (GMTs) between the 2 vaccines, seroprotection rates, and seroconversion rates. RESULTS: There was no clinically relevant difference between the safety and reactogenicity profiles of the 2 vaccines. The immunogenicity of CCIV was demonstrated to be noninferior to that of TIV on the basis of the ratio of postvaccination GMTs between the 2 vaccines. GMTs, seroprotection rates, and seroconversion rates were comparable between the 2 vaccines. CONCLUSIONS: The safety, reactogenicity, and immunogenicity of the CCIV and the egg-based TIV are comparable.
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