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Posts Tagged with "worldwide swine flu epidemic"

Worldwide flu epidemic: Danger in the herd!

May 7, 2009

The outbreak of swine flu worldwide captured immediate attention because it is a new strain – a combination of a virus found in pigs that changed enough to cause infections in farm workers in Mexico with other known flu viruses including influenza A. Billions of people on earth have no “herd immunity” to a new virus.

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