PMID- 29680389 OWN - NLM STAT- MEDLINE DCOM- 20181001 LR - 20181001 IS - 1532-2971 (Electronic) IS - 1090-0233 (Linking) VI - 234 DP - 2018 Apr TI - Testing of umbilical cords by real time PCR is suitable for assessing vertical transmission of porcine reproductive and respiratory syndrome virus under field conditions. PG - 27-29 LID - S1090-0233(18)30008-X [pii] LID - 10.1016/j.tvjl.2018.01.008 [doi] AB - The objective of this study was to test the suitability of umbilical cord (UC) sampling and ear vein swabbing (EVS) as alternatives to jugular vein bleeding (JVB) for the assessment of vertical transmission of porcine reproductive and respiratory syndrome virus (PRRSV). Twelve farms suspected to be PRRSV-positive unstable were selected and the three types of samples were obtained from 21 batches of newborn piglets (n=387). The proportions of positive results, viral loads and time spent to collect the samples were compared. UC yielded the highest detection rate, with 76 positives compared to 55 JVB- and 45 EV-positive results (P<0.05). Average Ct values were 26.6+/-8.5 for JVB, 30.8+/-6.4 for EV and 32.1+/-4.85 for UC (P<0.01). UC was the fastest collection method (mean 24s vs. 55s for EV and 72s for JVB; P<0.05). In this study, UC testing was a faster and more sensitive alternative to JVB or EV for the detection of PRRSV in newborn piglets. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Martin-Valls, Gerard E AU - Martin-Valls GE AD - Department Sanitat i Anatomia Animals, Facultat de Veterinaria, Universitat Autonoma de Barcelona, 08193 Cerdanyola del Valles, Spain; Centre de Recerca en Sanitat Animal (CReSA-IRTA-UAB), Edifici CRESA, Campus UAB, 08193 Cerdanyola del Valles, Spain. Electronic address: gerard.martin@uab.cat. FAU - Hidalgo, Mireia AU - Hidalgo M AD - Centre de Recerca en Sanitat Animal (CReSA-IRTA-UAB), Edifici CRESA, Campus UAB, 08193 Cerdanyola del Valles, Spain. FAU - Cano, Esmeralda AU - Cano E AD - Centre de Recerca en Sanitat Animal (CReSA-IRTA-UAB), Edifici CRESA, Campus UAB, 08193 Cerdanyola del Valles, Spain. FAU - Mateu, Enric AU - Mateu E AD - Department Sanitat i Anatomia Animals, Facultat de Veterinaria, Universitat Autonoma de Barcelona, 08193 Cerdanyola del Valles, Spain; Centre de Recerca en Sanitat Animal (CReSA-IRTA-UAB), Edifici CRESA, Campus UAB, 08193 Cerdanyola del Valles, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180201 PL - England TA - Vet J JT - Veterinary journal (London, England : 1997) JID - 9706281 SB - IM MH - Animals MH - Female MH - Infectious Disease Transmission, Vertical/veterinary MH - Porcine Reproductive and Respiratory Syndrome/*transmission MH - Porcine respiratory and reproductive syndrome virus/*isolation & purification MH - Pregnancy MH - Real-Time Polymerase Chain Reaction/*veterinary MH - Swine MH - Umbilical Cord/*virology OTO - NOTNLM OT - Diagnosis OT - Monitoring OT - PRRSV OT - Vertical transmission EDAT- 2018/04/24 06:00 MHDA- 2018/10/03 06:00 CRDT- 2018/04/23 06:00 PHST- 2017/07/24 00:00 [received] PHST- 2018/01/25 00:00 [revised] PHST- 2018/01/28 00:00 [accepted] PHST- 2018/04/23 06:00 [entrez] PHST- 2018/04/24 06:00 [pubmed] PHST- 2018/10/03 06:00 [medline] AID - S1090-0233(18)30008-X [pii] AID - 10.1016/j.tvjl.2018.01.008 [doi] PST - ppublish SO - Vet J. 2018 Apr;234:27-29. doi: 10.1016/j.tvjl.2018.01.008. Epub 2018 Feb 1.