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During the government shutdown, only web sites supporting excepted functions will be updated. As a result, the information on this website may not be up to date and the agency may not be able to respond to inquiries.
Updates regarding government operating status and resumption of normal operations can be found at https://www.opm.gov/.

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.

Information about the 2009 H1N1 Virus

November 25, 2009 10:00 AM ET

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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