Bovine Coronavirus Show sidebar + Disease Overview An infection that normally occurs in young calves, and is passed between cows through oral and fecal means. Merck Animal Health Solutions For Bovine Coronavirus BOVILIS® CORONAVIRUS Intranasal vaccine shown to be effective for the vaccination of healthy calves against enteric disease caused by bovine coronavirus. Efficacy shown in calves 3 days of age and older. Safety has been shown in calves 1 day of age and older. Learn More