TABLE 1.

Influenza virus epidemics in the Netherlands during influenza seasons from 1999 to 2007

SeasonSelected influenza virusSeverityDominant (sub)typeaDominant B lineageAge (yr) at which a child may be exposed
A/H3N2A/H1N1BA/H3N2A/H1N1B
2006-2007A/Hiroshima/52/05A/NewCaledonia/20/99, A/Solomon Islands/3/2006B/Malaysia/2506/04, B/Neth/001/07, B/Jiangsu/10/03ModerateDLALAYamagata only0-<8
2005-2006A/New York/55/04A/NewCaledonia/20/99, A/Neth/239/06B/Malaysia/2506/04, B/Jiangsu/10/03ModerateCDLACDYamagata+ Victoria0-<8
2004-2005A/Wyoming/3/03A/NewCaledonia/20/99B/Malaysia/2506/04, B/Jiangsu/10/03Relative severeDLALAYamagata only1-<8
2003-2004A/Wyoming/3/03A/NewCaledonia/20/99, A/Neth/128/04B/Malaysia/2506/04, B/Jiangsu/10/03ModerateDNILAYamagata only2-<8
2002-2003A/Panama/07/99A/NewCaledonia/20/99B/Shangdong/7/97ModerateCDLACDVictoria only3-<8
2001-2002A/Panama/07/99A/NewCaledonia/20/99B/Guangdong/120/00, B/Neth/080/02ModerateDLALAYamagata+ Victoria4-<8
2000-2001A/Panama/07/99, A/Neth/118/01A/NewCaledonia/20/99, A/Neth/306/00B/Yamanashi/166/98, B/Neth/429/99MildLADLAYamagata only5-<8
1999-2000rA/Sydney/5/97A/Beijing/262/95, A/Johannesburg/82/96B/Yamanashi/166/98, B/Neth/429/99ModerateDLALAYamagata only6-<8
  • a D, dominant; CD, codominant; LA, low activity; NI, no viruses of this subtype isolated.