Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159C, 02-776 Warsaw, Poland.
Goodvalley Agro S.A., Dworcowa 25, 77-320 Przechlewo, Poland.
Viruses. 2022 Jan 14;14(1):148. doi: 10.3390/v14010148.
(PRV1) is also known as porcine parainfluenza virus 1 (PPIV1). The prevalence and the role of PRV1 infections for pig health is largely unknown. In order to assess the PRV1 prevalence in Poland, nasal swabs and oral fluids collected from pigs from 30 farms were examined with RT real-time PCR. Additionally, IAV and PRRSV infection statuses of PRV1-positive samples were examined. The results showed that the virus is highly prevalent (76.7% farms positive) and different patterns of PRV1 circulation in herds with mild-moderate respiratory disease were observed. Co-infections with IAV and PRRSV were infrequent and detected in 8 (23.5%) and 4 (11.8%) out of 34 PRV1-positive nasal swab pools from diseased pens, respectively. In one pen PRV1, IAV, and PRRSV were detected at the same time. Interestingly, PRV1 mean Ct value in samples with co-infections was significantly lower (29.8 ± 3.1) than in samples with a single PRV1 infection (32.5 ± 3.6) ( < 0.05), which suggested higher virus replication in these populations. On the other hand, the virus detection in pig populations exhibiting respiratory clinical signs, negative for PRRSV and IAV, suggests that PRV1 should be involved in differential diagnosis of respiratory problems.
(PRV1)也被称为猪副流感病毒 1 (PPIV1)。PRV1 感染对猪健康的流行情况和作用在很大程度上尚不清楚。为了评估波兰 PRV1 的流行情况，从 30 个农场的猪采集鼻拭子和口腔液，并用 RT 实时 PCR 进行检测。此外，还检测了 PRV1 阳性样本中 IAV 和 PRRSV 的感染情况。结果表明，该病毒高度流行（76.7%的农场阳性），在有轻度至中度呼吸道疾病的畜群中观察到 PRV1 循环的不同模式。IAV 和 PRRSV 的合并感染并不常见，在来自患病猪栏的 34 个 PRV1 阳性鼻拭子池的 8 个（23.5%）和 4 个（11.8%）中检测到，分别。在一个猪圈中同时检测到 PRV1、IAV 和 PRRSV。有趣的是，合并感染样本中的 PRV1 平均 Ct 值（29.8±3.1）明显低于单一 PRV1 感染样本（32.5±3.6）（<0.05），这表明这些群体中的病毒复制更高。另一方面，在表现出呼吸道临床症状、PRRSV 和 IAV 均为阴性的猪群中检测到该病毒，表明 PRV1 应参与呼吸道问题的鉴别诊断。
