Is Swine Flu Making You Sick? Here’s the Lowdown on H1N1
Influenza A (H1N1), a subtype of the influenza virus, also known as swine flu, is a subtype of influenza A virus that causes respiratory illness in humans.
Influenza A (H1N1), a subtype of the influenza virus, also known as swine flu, is a subtype of influenza A virus that causes respiratory illness in humans.
