Seasonal Influenza

Other Influenzas

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Influenza Activity, Surveillance and Reports

Weekly influenza activity is based on reports of laboratory-confirmed influenza.

2012-2013 Influenza Season

Weekly influenza activity reports for the 2012-2013 influenza season (PDF)
- Previous 2012-2013 Weekly Influenza Activity Reports
U.S. Influenza Activity - Centers for Disease Control and Prevention
International Influenza Activity - Centers for Disease Control and Prevention
Influenza-like Illness Surveillance Program (ILINet)

Previous Seasons

2011-2012 Influenza Season
- Weekly Influenza Activity Reports for the 2011-2012 Influenza Season
2010-2011 Influenza Season
- Weekly Influenza Activity Reports for the 2010-2011 Influenza Season
2009-2010 Influenza Season
- Weekly Influenza Activity Reports for the 2009-2010 Influenza Season
2008-2009 Influenza Season
- Weekly Influenza Activity Report for Week Ending April 21, 2009 (PDF, 193KB, 12pg.)
- Weekly Influenza Activity Maps for the 2008-2009 Influenza Season
2007-2008 Influenza Season Statewide Summary Report (PDF, 152KB, 9pg.)
- Weekly Influenza Activity Maps for the 2007-2008 Influenza Season
2006-2007 Influenza Season Statewide Summary Report (PDF, 152KB, 9pg.)
2005-2006 Influenza Season Statewide Summary Report (PDF, 150KB, 10pg.)
2004-2005 Influenza Season Statewide Summary Report (PDF, 720KB, 11pg.)
2003-2004 Influenza Season Statewide Summary Report (PDF, 72KB, 10pg.)

U.S. Seasonal Influenza Mortality Estimates

Estimates of Deaths Associated with Seasonal Influenza - Centers for Disease Control and Prevention
- Questions and Answers on Estimating Seasonal Influenza-Associated Deaths in the U.S. - Centers for Disease Control and Prevention