1. A(H1N1)pdm09 - Egg-derived - Northern Hemisphere 2023-2024
Influenza A(H1N1)pdm09 egg-derived candidate vaccine viruses for development and production of vaccines for use in the 2023-2024 northern hemisphere influenza season
28 September 2023
| Technical document
Overview
Antigenic and genetic analyses are performed by the WHO Collaborating Centres of the Global Influenza Surveillance and Response System (GISRS). Unless otherwise specified, all candidate vaccine viruses posted on this table have passed two-way haemagglutination inhibition (HI) test. National or Regional control authorities approve the composition and formulation of vaccines used in each country.
WHO Team
Global Influenza Programme (GIP),
Global Influenza Surveillance and Response System