WASHINGTON (AP): Pigs in the state of Minnesota may have tested positive for the H1N1 virus in a preliminary test, the first potential U.S. cases in swine, U.S. Agriculture Department officials said Friday.
The officials cautioned that further tests were needed to confirm that the pigs had been infected with H1N1, also known as swine flu virus. The pigs did not exhibit signs of sickness and may have been infected by a group of children with the virus, they said.
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