Recommendations for Influenza Vaccine Composition
Southern hemisphere: May-October 2001
It is recommended that vaccines to be used in the 2001 season (southern hemisphere winter) contain the following:
- an A/Moscow/10/99 (H3N2)-like virus*
- an A/New Caledonia/20/99 (H1N1)-like virus
- a B/Sichuan/379/99-like virus
* The widely used vaccine strain is A/Panama/2007/99, which is an A/Moscow/10/99-like virus.