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Recombination in Vaccine and Circulating Strains of Porcine Reproductive and Respiratory Syndrome Viruses
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Dec 2009
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Source: Emerg Infect Dis. 15(12):2032-2035.
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Alternative Title:Emerg Infect Dis
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Description:Em2007, a porcine reproductive and respiratory syndrome virus (PRRSV) variant with a unique 68 aa deletion in Nsp2, was recently isolated in China. Phylogenetic and molecular evolutionary analyses indicated that Em2007 is a natural recombinant between a vaccine strain of PRRSV and circulating virus. We also tested its pathogenicity in piglets.
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