Bovilis Coronavirus Vaccine is used in calves as an aid in the reduction of enteric disease (scours) caused by bovine coronavirus. Bovilis Coronavirus Vaccine is approved for use in calves as young as 3 days of age. Administer 2 ml intranasally in one nostril, or split the dose between both nostrils. Safe for use in colostrum-fed calves. Proven safe in calves as young as 1 day of age. Modified live, requires mixing.