H1N1 Virus

Swine influenza is a flu virus usually found in pigs. The virus occasionally changes and becomes infectious in humans. When this happens, the disease becomes a concern to humans, who have little or no immunity against it. This means the virus has the potential to spread quickly around the world. It can be more difficult to treat than the usual, seasonal human flu viruses.

Most people who get the H1N1 flu will probably recover without needing medical care. Doctors, however, can prescribe antiviral medicine to treat people who become very sick with the flu or are at high risk for flu complications.