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

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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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