PMID- 33919161 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210526 IS - 2076-393X (Print) IS - 2076-393X (Electronic) IS - 2076-393X (Linking) VI - 9 IP - 5 DP - 2021 Apr 21 TI - Correlation of Neutralizing Antibodies (NAbs) between Sows and Piglets and Evaluation of Protectability Associated with Maternally Derived NAbs in Pigs against Circulating Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) under Field Conditions. LID - 10.3390/vaccines9050414 [doi] LID - 414 AB - Porcine reproductive and respiratory syndrome (PRRS), which is caused by a highly transmissible pathogen called porcine reproductive and respiratory syndrome virus (PRRSV), has caused severe problems, including reproductive disorders in sows and respiratory symptoms in nursery pigs worldwide, since the early 1990s. However, currently available PRRSV vaccines do not supply complete immunity to confront the viral infection. Elicitation of PRRSV-specific neutralizing antibodies (NAbs) during the preinfectious period has been deemed to be a feasible strategy to modulate this virus, especially in farms where nursery pigs are seized with PRRSVs. A total of 180 piglets in a farrow-to-finish farm that had a natural outbreak of PRRS were distributed into three groups based on the different PRRSV NAbs levels in their dams. In the present study, piglets that received superior maternal-transferred NAbs showed delayed and relatively slight viral loads in serum and, on the whole, higher survival rates against wild PRRSV infections. A positive correlation of maternal NAbs between sows and their piglets was identified; moreover, high NAbs titers in piglets can last for at least 4 weeks. These results provide updated information to develop an appropriate immune strategy for breeding and for future PRRSV control under field conditions. FAU - Hsueh, Fu-Chun AU - Hsueh FC AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Wang, Sheng-Yuan AU - Wang SY AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Lin, Wei-Hao AU - Lin WH AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Lin, Chuen-Fu AU - Lin CF AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Tsai, Chen-Yu AU - Tsai CY AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Huang, Chin-Wen AU - Huang CW AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Sun, Ning AU - Sun N AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Chiou, Ming-Tang AU - Chiou MT AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. FAU - Lin, Chao-Nan AU - Lin CN AUID- ORCID: 0000-0003-1911-7535 AD - Animal Disease Diagnostic Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. AD - Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan. LA - eng GR - MOST 325 109-2313-B-020-004/Ministry of Science and Technology, Taiwan/ PT - Journal Article DEP - 20210421 PL - Switzerland TA - Vaccines (Basel) JT - Vaccines JID - 101629355 PMC - PMC8143086 OTO - NOTNLM OT - correlates of protections OT - field experiment OT - maternal neutralizing antibody OT - porcine reproductive and respiratory syndrome virus OT - survival rate OT - viral load COIS- The authors declare no conflict of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2021/05/01 06:00 MHDA- 2021/05/01 06:01 PMCR- 2021/04/21 CRDT- 2021/04/30 01:11 PHST- 2021/03/26 00:00 [received] PHST- 2021/04/19 00:00 [revised] PHST- 2021/04/20 00:00 [accepted] PHST- 2021/04/30 01:11 [entrez] PHST- 2021/05/01 06:00 [pubmed] PHST- 2021/05/01 06:01 [medline] PHST- 2021/04/21 00:00 [pmc-release] AID - vaccines9050414 [pii] AID - vaccines-09-00414 [pii] AID - 10.3390/vaccines9050414 [doi] PST - epublish SO - Vaccines (Basel). 2021 Apr 21;9(5):414. doi: 10.3390/vaccines9050414.