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Serology reagents intended to detect antigens 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. 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 and may occasionally affect humans.
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