Detection of live attenuated influenza vaccine virus and evidence of reassortment in the U.S. swine population.

Abstract Influenza vaccines historically have been multivalent, whole virus inactivated products. The first bivalent, intranasal, live attenuated influenza vaccine (LAIV; Ingelvac Provenza), with H1N1 and H3N2 subtypes, has been approved for use in swine. We investigated the LAIV hemagglutinin ( HA ) sequences in diagnostic cases submitted to the […]

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