Abstract
Swine are an animal reservoir for influenza viruses capable of causing disease in humans. A serological survey in 1988-1989 demonstrates that subtype H1 influenza viruses continue to circulate at high frequency among swine in the north-central U.S.A. (average 51% incidence). Subtype H3 viruses antigenically similar to current human H3 viruses are circulating at low frequency (average 1.1%), particularly in the southeast U.S.A.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Antibodies, Viral / blood
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Incidence
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Influenza A virus / immunology
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Orthomyxoviridae Infections / epidemiology
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Orthomyxoviridae Infections / immunology
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Orthomyxoviridae Infections / veterinary*
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Swine
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Swine Diseases / epidemiology*
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Swine Diseases / immunology
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Swine Diseases / microbiology
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United States / epidemiology