Outbreak of Porcine Reproductive and Respiratory Syndrome Virus 1 in Taiwan

• Published in: Viruses Vol. 12; no. 3; p. 316
• Main Authors: Lin, Wei-Hao, Kaewprom, Kraijak, Wang, Sheng-Yuan, Lin, Chuen-Fu, Yang, Cheng-Yao, Chiou, Ming-Tang, Lin, Chao-Nan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 16.03.2020; MDPI
• Subjects: Animal diseases; Animals; Anorexia; Disease Outbreaks; Dyspnea; Epidemics; european type; Farms; Genomes; Hogs; Immunization; Infections; Laboratories; Maximum likelihood method; Mortality; Outbreaks; Phylogenetics; Porcine Reproductive and Respiratory Syndrome - epidemiology; Porcine Reproductive and Respiratory Syndrome - virology; porcine reproductive and respiratory syndrome virus 1; Porcine respiratory and reproductive syndrome virus - immunology; Respiratory Syncytial Virus Infections - epidemiology; Respiratory Syncytial Viruses - immunology; Sequence Analysis; Suckling behavior; Swine; Swine Diseases - epidemiology; Swine Diseases - virology; taiwan; Taiwan - epidemiology; Vaccination - veterinary; Vaccines; Vaccines, Attenuated - immunology; Viral Vaccines - immunology; Taiwan; United States > US; Switzerland; European type; Taiwan; porcine reproductive and respiratory syndrome virus 1
• ISSN: 1999-4915; 1999-4915
• DOI: 10.3390/v12030316

Porcine reproductive and respiratory syndrome (PRRS) causes significant economic losses in the swine industry worldwide. The PRRS virus (PRRSV) can be divided into two species, PRRSV 1 (European) and PRRSV 2 (North American). In Taiwan, PRRSV 2 isolates are dominant and cause respiratory symptoms in nursing pigs. From October to November 2018, in a pig herd in central Taiwan, pregnant sows had abortions and stillbirths, and piglets suffered from respiratory disorders. Laboratory tests identified the presence of PRRSV 1 in serum from sows and suckling piglets in this scenario. The complete genome of the identified PRRSV 1 strain was genetically closely related to that of a European PRRSV vaccine strain (98.2%). This local European isolate is designated as PRRSV/NPUST-2789-3W-2/TW/2018 (NPUST2789). This report is the first to indicate an outbreak in Taiwan of a PRRSV 1 strain that shares a common evolutionary ancestor with the European PRRSV vaccine strain.