Survey of bovine norovirus infections from diarrheic calves in South Korea, 2015-2017

Lee, Eun-Yong; Kang, Hyung-Woo; Kim, Ha-Young; Kim, Seong-Hee; Moon, Boyoun; So, Byung Jae; Lee, Kyoung-Ki; Kim, Yeon-Hee

doi:2019.59.1.33

Korean J Vet Res > Volume 59(1); 2019 > Article

Brief Communication

Korean Journal of Veterinary Research 2019;59(1):33-36.
DOI: https://doi.org/10.14405/kjvr.2019.59.1.33 Published online May 31, 2019.

Survey of bovine norovirus infections from diarrheic calves in South Korea, 2015-2017

Eun-Yong Lee, Hyung-Woo Kang, Ha-Young Kim, Seong-Hee Kim, Boyoun Moon, Byung Jae So, Kyoung-Ki Lee, Yeon-Hee Kim

Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency

Correspondence: Yeon-Hee Kim, Tel: 82-54-912-0482, Fax: 82-54-912-0499,
Email: vetyh@korea.kr

Abstract

This study examined complex infections with various enteropathogens and the genetic diversity of bovine norovirus (BNoV) in 932 fecal samples from diarrheic calves in South Korea. Overall, seventeen (1.8%) of the samples tested positive for BNoV following RT-PCR examination. All BNoV-positive samples were co-infected with other intestinal pathogens, including bovine Rotavirus, Giardia, Cryptosporidium, and Escherichia coli. The genetic diversity of the BNoVs shared high nucleotide identity (98.1-99.5%) and amino acid homology (93.5-98.1%) with genotype 2 BNoV (GIII.2) strains. In conclusion, BNoV infections with GIII genotypes were detected in complex infections of diarrheic calves in South Korea.

Key Words: bovine, norovirus, diarrhea, Korea