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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.

Dec 1 ALERT: Fraudulent emails referencing CDC-sponsored State Vaccination Program »

Situation Update

Map of flu activity in the U.S.During the week of November 29-December 5, 2009, flu activity continued to decline in the United States as reported in FluView. The number of states reporting widespread flu activity decreased from 25 to 14. Visits to doctors for influenza-like illness and flu-associated hospitalizations declined from the previous week, however flu-associated deaths increased.

See More On Key Flu Indicators »

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H1N1 Flu Vaccine

 
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