PMID- 21832096 OWN - NLM STAT- MEDLINE DCOM- 20120123 LR - 20211020 IS - 1556-679X (Electronic) IS - 1556-6811 (Print) IS - 1556-679X (Linking) VI - 18 IP - 10 DP - 2011 Oct TI - Effect of the modified live porcine reproductive and respiratory syndrome virus (PRRSV) vaccine on European and North American PRRSV shedding in semen from infected boars. PG - 1600-7 LID - 10.1128/CVI.05213-11 [doi] AB - The objective of the present study was to compare the effects of the modified live porcine reproductive and respiratory syndrome virus (PRRSV) vaccine (Ingelvac PRRS MLV; Boehringer Ingelheim Animal Health, St. Joseph, MO) on European and North American PRRSV shedding in the semen of experimentally infected boars. The boars were randomly divided into six groups. Vaccinated boars shed the North American PRRSV at the rate of 10(0.1) to 10(1.0) viral genome copies per ml and 3.63 to 10(1.1) 50% tissue culture infective doses (TCID(50))/ml, respectively, in semen, whereas nonvaccinated boars shed the North American PRRSV at the rate of 10(0.2) to 10(4.7) viral genome copies per ml and 1.14 to 10(3.07) TCID(50)/ml, respectively, in semen. Vaccinated boars shed the European PRRSV at the rate of 10(0.1) to 10(4.57) viral genome copies per ml and 1.66 to 10(3.10) TCID(50)/ml, respectively, in semen, whereas nonvaccinated boars shed the European PRRSV at the rate of 10(0.3) to 10(5.14) viral genome copies per ml and 1.69 to 10(3.17) TCID(50)/ml, respectively, in semen. The number of genomic copies of the European PRRSV in semen samples was not significantly different between vaccinated and nonvaccinated challenged European PRRSV boars. The present study demonstrated that boar vaccination using commercial modified live PRRSV vaccine was able to decrease subsequent shedding of North American PRRSV in semen after challenge but was unable to decrease shedding of European PRRSV in semen after challenge. FAU - Han, Kiwon AU - Han K AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. FAU - Seo, Hwi Won AU - Seo HW FAU - Shin, Jeoung Hwa AU - Shin JH 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 SI - GENBANK/JN315685 SI - GENBANK/JN315686 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110810 PL - United States TA - Clin Vaccine Immunol JT - Clinical and vaccine immunology : CVI JID - 101252125 RN - 0 (RNA, Viral) RN - 0 (Vaccines, Attenuated) RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Molecular Sequence Data MH - Porcine Reproductive and Respiratory Syndrome/*prevention & control/virology MH - Porcine respiratory and reproductive syndrome virus/*immunology/isolation & purification MH - RNA, Viral/genetics MH - Semen/immunology/*virology MH - Sequence Analysis, DNA MH - Swine MH - Vaccines, Attenuated/administration & dosage/immunology MH - Viral Load MH - Viral Vaccines/administration & dosage/*immunology MH - Virus Shedding/*immunology PMC - PMC3187033 EDAT- 2011/08/13 06:00 MHDA- 2012/01/24 06:00 PMCR- 2012/04/01 CRDT- 2011/08/12 06:00 PHST- 2011/08/12 06:00 [entrez] PHST- 2011/08/13 06:00 [pubmed] PHST- 2012/01/24 06:00 [medline] PHST- 2012/04/01 00:00 [pmc-release] AID - CVI.05213-11 [pii] AID - 5213-11 [pii] AID - 10.1128/CVI.05213-11 [doi] PST - ppublish SO - Clin Vaccine Immunol. 2011 Oct;18(10):1600-7. doi: 10.1128/CVI.05213-11. Epub 2011 Aug 10.