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AH1N1 virus, also known as influenza A virus subtype H1N1, is a strain of the influenza virus that causes respiratory illness in humans. It gained global attention during the 2009 flu pandemic and continues to circulate as a seasonal flu virus. Symptoms of AH1N1 infection can range from mild to severe, with the potential for serious complications in certain populations.

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Q: Introduction of ah1n1 virus
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