Weekly Epidemiological Record (WER)

Weekly Epidemiological Record, 23 March 2018, vol. 93, 12 (pp. 133–152)

Contents
133 Recommended composition of influenza virus vaccines for use in the 2018–2019 northern hemisphere influenza season
142 Antigenic and genetic characteristics of zoonotic influenza viruses and development of candidate vaccine viruses for pandemic preparedness

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