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Highly virulent porcine reproductive and respiratory syndrome viruses which produce lesions in pigs and vaccines that protect pigs against said syndrome

  • US 5,695,766 A
  • Filed: 10/05/1993
  • Issued: 12/09/1997
  • Est. Priority Date: 10/30/1992
  • Status: Expired due to Term
First Claim
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1. A naturally occurring isolated virus which causes porcine reproductive and respiratory syndrome (PRRS), wherein inoculation of five-week-old colostrum-deprived, caesarean-derived pigs with 105 TCID50 of said virus results in lesions in at least 51.9% of lung tissue 10 days post-infection.

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