The World Health Organization (WHO) has announced recommendations for the viral composition of quadrivalent and trivalent influenza vaccines for the 2022 to 2023 influenza season in the northern hemisphere. The announcement was made at an information session at the end of a four-day information meeting on the composition of influenza virus vaccines, an event that is held twice annually.
The WHO organises these consultations with an advisory group of experts, gathered from WHO collaboration centres and WHO essential regulatory laboratories, to analyse influenza virus surveillance data generated by the WHO Global Influenza Surveillance and Response System (GISRS). The recommendations issued are used by the national vaccine regulatory agencies and pharmaceutical companies to develop, produce, and license influenza vaccines for the following influenza season.
Source: WHO, 25 February 2022