Table 1.
Influenza vaccine recommendations issued by WHO, 1990–2008. Changes in vaccine composition are highlighted when they correspond to a change in vaccine strain (A/H1N1), antigenic cluster (A/H3N2), or lineage (B; Yamagata (Yam) vs Victoria (Vic)). N=Northern Hemisphere, S=Southern Hemisphere
| Hemis phere | Year | A/H1N1 | A/H3N2 | B |
|---|---|---|---|---|
| N | 1990 | A/Singapore/6/86 | A/Guizhou/54/89 | B/Yamagata/16/88 (Yam) |
| N | 1991 | A/Singapore/6/86 | A/Beijing/353/89 | B/Yamagata/16/88 or B/Panama/45/90 (Yam) |
| N | 1992 | A/Singapore/6/86 | A/Beijing/353/89 | B/Yamagata/16/88 or B/Panama/45/90 |
| N | 1993 | A/Singapore/6/86 | A/Beijing/32/92 | B/Panama/45/90 (Yam) |
| N | 1994 | A/Singapore/6/86 | A/Shangdong/9/93 | B/Panama/45/90 |
| N | 1995 | A/Singapore/6/86 | A/Johannesburg/33/94 | B/Beijing/184/93 (Yam) |
| N | 1996 | A/Singapore/6/86 | A/Wuhan/359/95 | B/Beijing/184/93 |
| N | 1997 | A/Bayern/7/95 | A/Wuhan/359/95 | B/Beijing/184/93 |
| N | 1998 | A/Beijing/262/95 | A/Sydney/5/97 | B/Beijing/184/93 |
| S | 1999 | A/Beijing/262/95 | A/Sydney/5/97 | B/Beijing/184/93 |
| N | 1999 | A/Beijing/262/95 | A/Sydney/5/973 | B/Beijing/184/93 |
| S | 2000 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Beijing/184/93 |
| N | 2000 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Beijing/184/93 |
| S | 2001 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Sichuan/379/99 (Yam) |
| N | 2001 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Sichuan/379/99 |
| S | 2002 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Sichuan/379/99 |
| N | 2002 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Hong Kong/330/2001 (Vic) |
| S | 2003 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Hong Kong/330/2001 |
| N | 2003 | A/New Caledonia/20/99 | A/Moscow/10/99 | B/Hong Kong/330/2001 |
| S | 2004 | A/New Caledonia/20/99 | A/Fujian/411/2002 | B/Hong Kong/330/2001 |
| N | 2004 | A/New Caledonia/20/99 | A/Fujian/411/2002 | B/Shanghai/361/2002 (Yam) |
| S | 2005 | A/New Caledonia/20/99 | A/Wellington/1/2004 | B/Shanghai/361/2002 |
| N | 2005 | A/New Caledonia/20/99 | A/California/7/2004 | B/Shanghai/361/2002 |
| S | 2006 | A/New Caledonia/20/99 | A/California/7/2004 | B/Malaysia/2506/2004 (Vic) |
| N | 2006 | A/New Caledonia/20/99 | A/Wisconsin/67/2005 | B/Malaysia/2506/2004 |
| S | 2007 | A/New Caledonia/20/99 | A/Wisconsin/67/2005 | B/Malaysia/2506/2004 |
| N | 2007 | A/Solomon Islands/3/2006 | A/Wisconsin/67/2005 | B/Malaysia/2506/2004 |
| S | 2008 | A/Solomon Islands/3/2006 | A/Brisbane/10/2007 | B/Florida/4/2006 (Yam) |
| N | 2008 | A/Brisbane/59/2007 | A/Brisbane/10/2007 | B/Florida/4/2006 |