EARLY RELEASE: Triple-Reassortant Swine Influenza A (H1) in Humans in the United States, 2005-2009

May 21st, 2009 by admin Leave a reply »

<p>Background Triple-reassortant swine influenza A (H1) viruses — containing genes from avian, human, and swine influenza viruses — emerged and became enzootic among pig herds in North America during the …
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