PMID- 26864027 OWN - NLM STAT- MEDLINE DCOM- 20160728 LR - 20160319 IS - 2042-7670 (Electronic) IS - 0042-4900 (Linking) VI - 178 IP - 12 DP - 2016 Mar 19 TI - Comparison of commercial type 1 and type 2 PRRSV vaccines against heterologous dual challenge. PG - 291 LID - 10.1136/vr.103529 [doi] AB - This study was to compare the effect of vaccination of pigs with either type 1 or type 2 porcine reproductive and respiratory syndrome virus (PRRSV) against heterologous dual challenge of both genotypes. Pigs were administered type 1 (UNISTRAIN PRRS) or type 2 (Fostera PRRS) PRRSV vaccine at 28 days of age and inoculated intranasally with both genotypes at 63 days of age. Vaccination of pigs with type 1 PRRSV was able to reduce the levels of type 1 but not type 2 PRRSV viraemia, whereas vaccination of pigs with type 2 PRRSV was able to reduce the levels of type 1 and type 2 PRRSV viraemia against a dual challenge. Vaccination of pigs with type 2 PRRSV significantly reduced lung lesions after dual challenge compared with vaccination of pigs with type 1 PRRSV. Vaccination of pigs with type 2 PRRSV induced higher numbers of type 1 and type 2 PRRSV-specific interferon-gamma secreting cells compared with vaccination of pigs with type 1 PRRSV after dual challenge. The results of this study demonstrated that vaccination of pigs with type 2 PRRSV is efficacious in protecting growing pigs from respiratory disease after heterologous dual type 1 and type 2 PRRSV challenge compared with vaccination of pigs with type 1 PRRSV. CI - British Veterinary Association. FAU - Choi, K AU - Choi K AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. FAU - Park, C AU - Park C AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. FAU - Jeong, J AU - Jeong J AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. FAU - Kang, I AU - Kang I AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. FAU - Park, S-J AU - Park SJ AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. FAU - Chae, C AU - Chae C AD - Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160210 PL - England TA - Vet Rec JT - The Veterinary record JID - 0031164 RN - 0 (Viral Vaccines) SB - IM MH - Animals MH - Genotype MH - Porcine Reproductive and Respiratory Syndrome/immunology/*prevention & control MH - Porcine respiratory and reproductive syndrome virus/genetics/*immunology MH - Swine MH - Vaccination/methods/*veterinary MH - Viral Vaccines/*immunology OTO - NOTNLM OT - Co-infection OT - Genotype OT - Porcine reproductive and respiratory syndrome OT - Vaccine EDAT- 2016/02/13 06:00 MHDA- 2016/07/29 06:00 CRDT- 2016/02/12 06:00 PHST- 2016/01/18 00:00 [accepted] PHST- 2016/02/12 06:00 [entrez] PHST- 2016/02/13 06:00 [pubmed] PHST- 2016/07/29 06:00 [medline] AID - vr.103529 [pii] AID - 10.1136/vr.103529 [doi] PST - ppublish SO - Vet Rec. 2016 Mar 19;178(12):291. doi: 10.1136/vr.103529. Epub 2016 Feb 10.