WHO Information Meeting – Composition of Influenza Virus Vaccines – 2022-2023 Northern Hemisphere

Due to the constant evolving nature of influenza viruses, viruses contained in influenza vaccines must be updated periodically in order for the vaccines to be effective.

Twice annually, WHO organizes consultations with an advisory group of experts to analyse influenza virus surveillance data generated by the WHO Global Influenza Surveillance and Response System (GISRS), and issues recommendation on the composition of the influenza vaccines for the following influenza season. These recommendations are used by the national vaccine regulatory agencies and the pharmaceutical companies to develop, produce and license influenza vaccines.

An information session on 25 February 2022 is open to all manufacturers of influenza vaccines and national regulatory authorities through registration free of charge.

You May Also Like