Antigenic and genetic characteristics of zoonotic influenza viruses and candidate vaccine viruses developed for potential use in human vaccines (2017)



This document summarizes the genetic and antigenic characteristics of recent zoonotic influenza viruses and related viruses circulating in animals that are relevant to candidate influenza vaccine viruses (CVV) updates. Institutions interested in receiving these CVVs should contact WHO at or the institutions listed in announcements published on the WHO website.