h1n1 influenza a virus(swine flu) and h1n1 influenza a(swine flu)

about h1n1 influenza a(swine flu) , h5n1 influenza a ，know more about influenza a and History of H1N1 Influenza A virus.

how to distinguish h1n1 from the influenza

(a) suspected cases
With one of following cases can be diagnosed with suspected cases:
1, 7 days with influenza pandemic suspected or H1N1 confirmed cases are in close contact with (effective protective conditions, and take care of patients with live together, exposure to the same environment, or direct contact with the airway secretions or body fluids), flu-like [...]

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