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Swine flu may not have started in Mexico

June 25, 2009 8:46:19 AM PDT
The swine flu pandemic may not have originated in Mexico as experts once thought.In fact, the New York Times reports experts now think it came from pigs in Asia and was brought to North America by an infected human.

There's still no evidence the H1N1 virus has circulated among North American pigs, but a similar virus has been found in Asian pigs.

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