No abstract available
MeSH terms
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Antibodies, Viral / blood
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Germany / epidemiology
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Hemagglutination Inhibition Tests
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Humans
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Influenza A Virus, H2N2 Subtype / isolation & purification*
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Influenza, Human / epidemiology
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Influenza, Human / transmission*
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Influenza, Human / virology
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Medical Laboratory Personnel*
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Occupational Exposure*
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Seroepidemiologic Studies