Why the study?
The prevalence, genetic diversity, and association of bovine astrovirus with cattle diarrhoea were poorly understood.
Population
87 diarrhoeal and 77 asymptomatic calves from 20 farms in 12 provinces
Comparison
Diarrhoeal calves vs asymptomatic calves
Authors
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May inform calf diarrhoea diagnostics; leaves open causality and need for prospective studies.
BoAstV infection, particularly when co-infected with bovine rotavirus, is significantly associated with diarrhoea in calves, and exhibits high genetic diversity including novel genotypes.
Zhu et al. (2021) studied this question.
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