Content on this page was developed during the 2009-2010 H1N1 pandemic and has not been updated.
- The H1N1 virus that caused that pandemic is now a regular human flu virus and continues to circulate seasonally worldwide.
- The English language content on this website is being archived for historic and reference purposes only.
- For current, updated information on seasonal flu, including information about H1N1, see the CDC Seasonal Flu website.
H1N1 Flu (Swine Flu): Health Alert Network (HAN)
For today's update, please see the information on the H1N1 Flu homepage.
- February 2, 2010
- January 29, 2010
- January 08, 2010
- December 15, 2009
- November 16, 2009
- November 06, 2009
- October 19, 2009
- September 25, 2009
- August 6, 2009
- July 8, 2009
- May 27, 2009
- May 26, 2009
- May 11, 2009
- May 8, 2009
- May 7, 2009
- May 6, 2009
- May 3, 2009
- May 1, 2009
- April 28, 2009
- April 27, 2009
- April 26, 2009 (11:45 PM ET)
- April 26, 2009 (11:00 AM ET)
- April 25, 2009
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