Molecular surveillance of viral pathogens associated with diarrhea in pre-weaned Korean native calves.

ABSTRACT: Calf diarrhea causes severe economic losses in the cattle industry worldwide. This study investigated the prevalence of bovine coronavirus (BCoV), bovine norovirus (BNoV), bovine group A rotavirus (BoRVA), and bovine torovirus (BToV) in calves aged ??60 days, regardless of diarrhea, across nine different regions in the Republic of Korea (ROK) and reported associations between these viruses and diarrhea. Fecal samples were collected rectally from 689 calves: normal (n?=?360) and diarrheic (n?=?329). BNoV (84/689, 12.2%) was the most prevalent regardless of diarrhea, followed by BCoV (37/689, 5.4%), BToV (15/689, 2.2%), and BoRVA (13/689, 1.9%). Although BCoV (P?=?0.032) and BoRVA (P?=?0.007) were significantly associated with diarrhea in pre-weaned calves, BNoV and BToV showed no association. Infection by the four pathogens had no relationship with calf age; BoRVA was detected only in calves aged

SUBMITTER: Ryu JH 

PROVIDER: S-EPMC7089501 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature