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H1N1
H1N1, also known as the swine flu, is a subtype of the influenza A virus that causes respiratory illness in humans. It was first identified in April 2009 and quickly spread across the globe, resulting in a pandemic. The H1N1 virus is called "swine flu" because it originally emerged in pigs, but it can also be transmitted from person to person.
Edited at 2023-09-16 04:58:08
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