CDC MMWR Update: Influenza Activity - United States - August 30, 2009--January 9, 2010
posted on 22 January 2010 | posted in Flu Pandemic
|The emergence and spread of the 2009 pandemic influenza A (H1N1) virus (2009 H1N1) resulted in extraordinary influenza activity in the United States throughout the summer and fall months of 2009.|
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