Influenza Vaccination Zones

Vaccination Zone map
Vaccination Zone

The Influenza Vaccination Zone is an evidence-based resource to provide practical recommendations to countries situated in the tropics and subtropics on when to vaccinate and which formulation to use.

Countries with a similar onset period of their main influenza season where the circulating influenza viruses are closely related to the recommended vaccine viruses, are grouped into eight geographical ‘Influenza Vaccination Zones’. In addition, Kenya and Malaysia are categorized as having year-round activity without any distinct peaks.