Weekly Epidemiological Record (WER)

27 February 2009, vol. 84, 9 (pp 65–76)

Contents
65 Recommended composition of influenza virus vaccines for use in the 2009–2010 influenza season (northern hemisphere winter)
72 Antigenic and genetic characteristics of H5N1 viruses and candidate vaccine viruses developed for potential use in human vaccines, February 2009

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