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Map: International Co-circulation of 2009 H1N1 and Seasonal Influenza
(As of November 13, 2009; posted November 13, 2009, 4:30 PM ET)

This website is archived for historical purposes and is no longer being maintained or updated. For updated information on the current flu season, see the CDC Seasonal Flu website.

This picture depicts a map of the world that shows the co-circulation of 2009 H1N1 flu and seasonal influenza viruses. The United States, Canada, Europe, Kenya, Japan and China are depicted. There is a pie chart for each that shows the percentage of laboratory confirmed influenza cases that have tested positive for either 2009 H1N1 flu or other influenza subtypes. The majority of laboratory confirmed influenza cases reported in the United States, Canada, Europe, Japan and China have been 2009 H1N1 flu.

 
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