| Year | Circulating strains A(H3N2) |
---|---|---|
 | 1998-1999 | A/Sydney/5/97-like |
 | 1999-2000 | A/Sydney/5/97-like |
 | 2000-2001 | none |
Testing sera âžž | 2001-2002 | A/Panama/2007/99-like |
2002-2003 | A/Panama/2007/99-like | |
 | 2003-2004 | A/Fujian/411/02-like * |
 | 2004-2005 | A/Wyoming/3/03-like |
 | 2005-2006 | A/California/7/04-like |
Testing sera âžž | 2006-2007 | A/Wisconsin/67/05-like # |
2007-2008 | A/Brisbane/10/07-like | |
 | 2008-2009 | A/Brisbane/10/07-like |