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Serology reagents intended to detect immunoglobulin M (IgM) antibodies to Influenza virus type A, a single-stranded RNA virus of the family Orthomyxoviridae. Influenza A viruses may cause human influenza, a disease characterized by sudden onset of high fever, myalgia, headache, severe malaise, nonproductive cough, sore throat, and rhinitis. The subtypes of influenza known to affect humans are H1N1, H1N2, and H3N2; other subtypes such as H5 and H7 (i.e., avian influenza) affect birds but may occasionally affect humans.
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