Archived historic info about the 2009-2010 H1N1 flu pandemic
Map of flu activity in the U.S. The U.S. Public Health Emergency for 2009 H1N1 Influenza expired on June 23, 2010. On August 10, 2010, the World Health Organization (WHO) External Web Site Icon International Health Regulations (IHR) Emergency Committee declared an end to the 2009 H1N1 pandemic globally. For information about CDC's response to the 2009 H1N1 pandemic, visit The 2009 H1N1 Pandemic: Summary Highlights, April 2009-April 2010. Internationally, 2009 H1N1 viruses and seasonal influenza viruses are co-circulating in many parts of the world. It is likely that the 2009 H1N1 virus will continue to spread for years to come, like a regular seasonal influenza virus.
For current, updated information on seasonal flu, including information about H1N1, see the CDC Seasonal Flu website.
This Swine widget, courtesy of HHS and CDC, provides a graphic with links to Swine Flu Info.
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