Article
Porcine reproductive and respiratory syndrome virus: origin hypothesis.
Emerging infectious diseases - 1 Aug 2003
Plagemann Peter G W
Abstract excerpt
Porcine reproductive and respiratory syndrome is a serious swine disease that appeared suddenly in the midwestern United States and central Europe approximately 14 years ago; the disease has now spread worldwide. In North America and Europe, the syndrome is caused by two genotypes of porcine repr...
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