PMID- 11425255 OWN - NLM STAT- MEDLINE DCOM- 20011101 LR - 20190702 IS - 0042-4900 (Print) IS - 0042-4900 (Linking) VI - 148 IP - 22 DP - 2001 Jun 2 TI - Diagnostic investigation of chronic porcine reproductive and respiratory syndrome virus in a breeding herd of pigs. PG - 687-90 AB - Forty-five sows and 15 boars were selected at random from a breeding herd known to be chronically infected with porcine reproductive and respiratory syndrome virus (PRRSV) and lymphoid, immune-privileged, and non-lymphoid/non-immune-privileged tissues were tested for the presence of the virus by PCR, virus isolation, and immunohistochemistry. The virus was isolated from the lateral retropharyngeal lymph node of one sow; the isolate was nucleic acid sequenced and determined to be of field origin, and it was inoculated into two PRRSV-naive pregnant sows (A and B) at 95 days of gestation. They were necropsied 14 days later and samples of maternal and fetal tissue and blood samples were collected. Sow A had 10 fresh, six partially autolysed, and two mummified fetuses, and sow B had six fresh and viable fetuses. Viral nucleic acid was detected by PCR in tissue pools from each sow and also from pooled fetal tissues, and the virus was isolated from fetal pools from sow A. FAU - Bierk, M D AU - Bierk MD AD - Department of Clinical and Population Sciences, University of Minnesota College of Veterinary Medicine, St Paul 55108, USA. FAU - Dee, S A AU - Dee SA FAU - Rossow, K D AU - Rossow KD FAU - Collins, J E AU - Collins JE FAU - Guedes, M I AU - Guedes MI FAU - Pijoan, C AU - Pijoan C FAU - Molitor, T W AU - Molitor TW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Vet Rec JT - The Veterinary record JID - 0031164 SB - IM EIN - Vet Rec 2001 Jul 21;149(3):90 MH - Animals MH - Chronic Disease MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Male MH - Polymerase Chain Reaction MH - Porcine Reproductive and Respiratory Syndrome/*diagnosis/virology MH - Porcine respiratory and reproductive syndrome virus/*isolation & purification/pathogenicity MH - Swine EDAT- 2001/06/27 10:00 MHDA- 2001/11/03 10:01 CRDT- 2001/06/27 10:00 PHST- 2001/06/27 10:00 [pubmed] PHST- 2001/11/03 10:01 [medline] PHST- 2001/06/27 10:00 [entrez] AID - 10.1136/vr.148.22.687 [doi] PST - ppublish SO - Vet Rec. 2001 Jun 2;148(22):687-90. doi: 10.1136/vr.148.22.687.