Recommended composition of influenza virus vaccines for use in the 2011-2012 northern hemisphere influenza season
17 February 2011
| Meeting report

Overview
17 February 2011
It is recommended that vaccines for use in the 2011-2012 influenza season (northern hemisphere) contain the following:
- an A/California/7/2009 (H1N1)-like virus;
- an A/Perth/16/2009 (H3N2)-like virus;
- a B/Brisbane/60/2008-like virus.
WHO Team
Global Influenza Programme (GIP)