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Flu season
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Key terms: human influenza viruses ha strain caused pandemic severe endemic cdc spread annual cases currently bird bind avian influenza infection person influenzavirus subtypes farms china confirmed swine flu human flu outbreak deaths hong kong illness protein genetic poultry epidemic symptoms receptors human influenza influenza viruses influenza a virus responsible spanish flu sialic acid flu viruses influenzavirus b reassortment hemagglutinin fully recovered currently circulating both human and pig populations currently endemic in both human Search external links cited by footnotes on Wikipedia page Human flu: |
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