Influenza vaccine effectiveness among 50-64-year-old persons during a season of poor antigenic match between vaccine and circulating influenza virus strains: Colorado, United States, 2003-2004.
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C. Bridges | M. Cortese | K. Gershman | P. Gargiullo | Cedric J Brown | F. Averhoff | S. Chaves | M. Iwane | G. Herrera | A. Shupe | Cedric J. Brown