A(H1N1) Flu Outbreak> About A（H1N1） Influenza
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A(H1N1) Flu Outbreak> About A（H1N1） Influenza
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 Factfile on the swine flu outbreak that started in Mexico.
Swine influenza virus (referred to as SIV) refers to influenza cases that are caused by Orthomyxoviruses endemic to pig populations.
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