Abstract
We isolated and plaque purified IA76950-WT and IA70388-R, 2 porcine reproductive and respiratory syndrome viruses from pigs in the same herd in Iowa, USA, that exhibited coughing and had interstitial pneumonia. Phylogenetic and molecular evolutionary analysis indicated that IA70388-R is a natural recombinant from Fostera PRRSV vaccine and field strain IA76950-WT.
Keywords:
PRRSV; United States; pigs; porcine reproductive and respiratory syndrome virus; recombination; swine; vaccine; viruses; wild type.
MeSH terms
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Animals
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Evolution, Molecular
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Genome, Viral
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Genomics / methods
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Phylogeny
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Porcine Reproductive and Respiratory Syndrome / prevention & control
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Porcine Reproductive and Respiratory Syndrome / virology*
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Porcine respiratory and reproductive syndrome virus / classification
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Porcine respiratory and reproductive syndrome virus / physiology*
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Recombination, Genetic*
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Swine
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Vaccines, Attenuated / genetics*
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Vaccines, Attenuated / immunology
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Viral Vaccines / genetics*
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Viral Vaccines / immunology
Substances
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Vaccines, Attenuated
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Viral Vaccines