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Influenza A virus subtype H1N1

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Antigenic Shift and the H1N1 Influenza A Virus

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H1N1 Virus (2009): How the Influenza Virus Spreads

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HealthMap detects the H1N1 virus

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HealthMap detects the H1N1 virus

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'GMA' Hot List: How effective are vaccines against the H1N1 flu virus?

Influenza A virus subtype H1N1 (A/H1N1) is the subtype of influenza A virus that was the most common cause of human influenza (flu) in 2009, and is associated with the 1918 outbreak known as the Spanish flu.
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    • In pregnancy