PMID- 22237898 OWN - NLM STAT- MEDLINE DCOM- 20120613 LR - 20211021 IS - 1556-679X (Electronic) IS - 1556-6811 (Print) IS - 1556-679X (Linking) VI - 19 IP - 3 DP - 2012 Mar TI - Effects of North American porcine reproductive and respiratory syndrome virus (PRRSV)-based modified live vaccines on preimmunized sows artificially inseminated with European PRRSV-spiked semen. PG - 319-24 LID - 10.1128/CVI.05639-11 [doi] AB - The objective of the present study was to determine if the European porcine reproductive and respiratory syndrome virus (PRRSV) can be transmitted via spiked semen to preimmunized sows and induce reproductive failure. Sows were immunized with the North American PRRSV-based modified live vaccine (Ingelvac PRRS MLV; Boehringer Ingelheim Animal Health, St. Joseph, MO) and were artificially inseminated. The sows were randomly divided into three groups. The vaccinated (group 2) and nonvaccinated (group 3) sows developed a PRRSV viremia at 7 to 28 days postinsemination with the European PRRSV-spiked semen. The number of genomic copies of the European PRRSV in serum samples was not significantly different between vaccinated and nonvaccinated sows. All negative-control sows in group 1 farrowed at the expected date. The sows in groups 2 and 3 farrowed between 103 and 110 days after the first insemination. European PRRSV RNA was detected in the lungs of 8 out of 11 live-born piglets and 46 out of 54 stillborn fetuses. In addition, PRRSV RNA was detected using in situ hybridization in other tissues from vaccinated sows that had been inseminated with European PRRSV-spiked semen (group 2). The present study has demonstrated that vaccinating sows with the North American PRRSV-based modified live vaccine does not prevent reproductive failure after insemination with European PRRSV-spiked semen. FAU - Han, Kiwon AU - Han K AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea. FAU - Seo, Hwi Won AU - Seo HW FAU - Oh, Yeonsu AU - Oh Y FAU - Kang, Ikjae AU - Kang I FAU - Park, Changhoon AU - Park C FAU - Chae, Chanhee AU - Chae C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120111 PL - United States TA - Clin Vaccine Immunol JT - Clinical and vaccine immunology : CVI JID - 101252125 RN - 0 (Vaccines, Attenuated) RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Blood/virology MH - Female MH - Lung/virology MH - Porcine Reproductive and Respiratory Syndrome/*prevention & control/transmission MH - Porcine respiratory and reproductive syndrome virus/genetics/*immunology MH - Semen/*virology MH - Swine MH - Vaccines, Attenuated/administration & dosage/genetics/immunology MH - Viral Load MH - Viral Vaccines/administration & dosage/genetics/*immunology MH - Viremia/prevention & control PMC - PMC3294617 EDAT- 2012/01/13 06:00 MHDA- 2012/06/14 06:00 PMCR- 2012/09/01 CRDT- 2012/01/13 06:00 PHST- 2012/01/13 06:00 [entrez] PHST- 2012/01/13 06:00 [pubmed] PHST- 2012/06/14 06:00 [medline] PHST- 2012/09/01 00:00 [pmc-release] AID - CVI.05639-11 [pii] AID - 05639-11 [pii] AID - 10.1128/CVI.05639-11 [doi] PST - ppublish SO - Clin Vaccine Immunol. 2012 Mar;19(3):319-24. doi: 10.1128/CVI.05639-11. Epub 2012 Jan 11.