Phylogenetic Classification of Global Porcine Deltacoronavirus (PDCoV) Reference Strains and Molecular Characterization of PDCoV in Taiwan.

Porcine deltacoronavirus (PDCoV), a highly transmissible intestinal pathogen, causes mild to severe clinical symptoms, such as anorexia, vomiting and watery diarrhea, in piglets and/or sows. Since the first report of PDCoV infection in Hong Kong in 2012, the virus has readily disseminated to North America and several countries in Asia. However, to date, no unified phylogenetic classification system has been developed.

Genotypic analyses and virulence characterization of isolates from Taiwan.

Background: () () causes severe economic losses in the swine industry. Multiple strains can exist in single animals. Typing techniques are required for identifying isolates.

Emergence of a virulent porcine reproductive and respiratory syndrome virus in Taiwan in 2018.

In March 2018, an abortion storm caused by porcine reproductive and respiratory syndrome virus was confirmed in a farrow-to-finish pig herd in Taiwan. Open reading frame 5 and non-structural protein 2 of the virus confirmed that the virus is closely related to the virulent strains circulating in the United States.

Molecular serotyping of isolated from diseased pigs and the relationship between serovars and pathological patterns in Taiwan.

Background: is the etiological agent of Glässer's disease, and causes severe economic losses in the swine industry. Serovar classification is intended as an indicator of virulence and pathotype and is also crucial for vaccination programs and vaccine development. According to a polysaccharide biosynthesis locus analysis, isolates could be classified by a molecular serotyping assay except serovars 5 and 12 detected by the same primer pair.