WHO recommendations on the composition of the 2017/18 influenza virus vaccines in the northern hemisphere

摘要

The World Health Organization (WHO) convenes technical consultations’ in February/March and September each year to recommend viruses for inclusion in influenza vaccines for the northern and southern hemisphere influenza seasons, respectively. This recommendation relates to the influenza vaccines for use in the forthcoming northern hemisphere 2017-2018 influenza season. A recommendation will be made in September 2017 relating to vaccines that will be used for the southern hemisphere 2018 influenza season. For countries in tropical and subtropical regions, epidemiological considerations influence which recommendation (northern hemisphere or southern hemisphere) individual national and regional authorities consider appropriate.