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조회 182  인쇄하기 주소복사 트위터 공유 페이스북 공유 
Evolutionary dynamics of classical swine fever virus in South Korea: 1987–2017
Dong-Jun Ana, Seong-in Lima, SeEun Choea, Ki-Sun Kima, Ra Mi Chaa, In-Soo Choa,Jae-Young Songa, Bang-Hun Hyuna, Bong-Kyun Parka,b,*

Virus Disease Division, Animal and Plant Quarantine Agency, Gimchen, Gyeongbuk-do, 39660, outh Korea
bDepartment of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine, eoul University, Gwanak-ro, Gwanak-gu, eoul, 08826, outh Korea

*Corresponding author

The 5′ UTR (n=102) and full-length E2 (n=37) genes of classical swine fever viruses (CSFVs) circulating in South Korea over the past 30 years (1987?2017) were examined to determine the evolutionary rate and estimated time of the most recent common ancestor (tMRCA). From 2000, the Korean classical swine fever (CSF) antigen changed from genotype 3 to 2, which comprises subgenotypes 2.1b (2002?2013) and 2.1d (2011?2017). There are genotypic variations in the full-length E2 gene of Korean CSFV genotypes 2.1b and 2.1d (seven separate amino acid substitutions); these are useful distinguishing markers. The mean substitution rate (×103 substitutions/site/year) for Korean CSFV was estimated to be 2.2088 (95% highest posterior density (HPD): lower, 1.7045; upper, 2.7574) and the mean tMRCA was estimated to be 1901 (95% HPD: lower, 1865; upper, 1933). The effective population size of Korean CSFV genotype 2 increased rapidly from 2002 to 2003, after which it remained constant. The occurrence of CSF in Korea is expected to decline in the future; however, it will likely be more prevalent in wild boar than in domestic pigs. Thus, there is a risk of transmission from wild boar to breeding pigs.

Keywords : Classical swine fever virus, Evolution, Subgenotype 2.1d
- 형식: Research article
- 게재일: 2018년 09월 (BRIC 등록일 2018-09-28)
- 연구진: 국내연구진 태극기
- 분야: Microbiology, Veterinary_Science
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