H3N2 Virus: Symptoms, Causes, and Treatments H3N2 virus, also known as influenza A (H3N2), is a type of virus that causes the flu. It is a member of the orthomyxoviridae family of viruses and is one of the most common strains of the flu virus. The H3N2 virus first appeared in humans in 1968, and since then, it has been …
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