The 2009 H1N1 Virus which is believed to be made up of Human, Swine, and Bird parts.
The chance of getting this new virus from pigs, birds and people in the spring is about one chance in a million. I think that's why we call it the when pigs fly virus.
by Tomicus May 10, 2009

5 Words Related to When Pigs Fly Virus

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