Detection of bovine leukemia virus in beef cattle kept in the Central Coast Regions of Vietnam

Dung Thi LE; Son Vu NGUYEN; Thu Anh Nu LE; Van Huu NGUYEN; Phung Dinh LE; Dung Van DINH; Hai Thanh DUONG; Hai Van VU; Yuri FUJIMOTO; Tetsuo KUNIEDA; Takeshi HAGA

doi:10.1292/jvms.22-0240

Virology

Detection of bovine leukemia virus in beef cattle kept in the Central Coast Regions of Vietnam

Dung Thi LE, Son Vu NGUYEN, Thu Anh Nu LE, Van Huu NGUYEN, Phung Dinh LE, Dung Van DINH, Hai Thanh DUONG, Hai Van VU, Yuri FUJIMOTO, Tetsuo KUNIEDA, Takeshi HAGA

Author information

Dung Thi LE
Division of Infection Control and Disease Prevention, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
Son Vu NGUYEN
Department of Veterinary Pathology, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam
Thu Anh Nu LE
Faculty of Animal Science and Veterinary, University of Agriculture and Forestry, Hue University, Hue, Vietnam
Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
Van Huu NGUYEN
Faculty of Animal Science and Veterinary, University of Agriculture and Forestry, Hue University, Hue, Vietnam
Phung Dinh LE
Faculty of Animal Science and Veterinary, University of Agriculture and Forestry, Hue University, Hue, Vietnam
Dung Van DINH
Faculty of Animal Science and Veterinary, University of Agriculture and Forestry, Hue University, Hue, Vietnam
Hai Thanh DUONG
Faculty of Animal Science and Veterinary, University of Agriculture and Forestry, Hue University, Hue, Vietnam
Hai Van VU
Faculty of Animal Science and Veterinary, University of Agriculture and Forestry, Hue University, Hue, Vietnam
Yuri FUJIMOTO
Laboratory of OSG Veterinary Science for Global Disease Management, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
Tetsuo KUNIEDA
Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
Takeshi HAGA
Division of Infection Control and Disease Prevention, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
Laboratory of OSG Veterinary Science for Global Disease Management, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan

Keywords: beef cattle, bovine leukemia virus, genotyping, Vietnam

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Supplementary material

2023 Volume 85 Issue 1 Pages 111-116

DOI https://doi.org/10.1292/jvms.22-0240

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Abstract

Bovine leukemia virus (BLV) is the etiologic agent of enzootic bovine leucosis. Our previous study showed the BLV existence in cattle kept in the Red River Delta Region of Vietnam. However, no positive samples were identified in beef cattle. Besides, information related to the BLV circulation in the remained parts of Vietnam is limited. Therefore, we tested the existence of BLV in 48 beef cattle kept in the Central Coast Regions. Nested PCR targeting the BLV-env-gp51 confirmed the prevalence of 14.6% in investigated regions. Phylogenetic analysis suggested the co-existence of genotypes 1 and 10. The close relationship between strains found in Vietnam, Thailand, Myanmar, and China was revealed suggesting the possibility of BLV transmission through the movement of live cattle.

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