Bovine rota-coronavirus vaccine (killed virus) Clostridium perfringens type C - Escherichia coli bacterin-toxoid. Use for vaccination of healthy, pregnant cows and heifers as an aid in preventing diarrhea in their calves caused by bovine rotavirus (serotypes G6 and G10), bovine coronavirus, enterotoxigenic strains of E. coli having the K99 pili adherence factor and Clostridium perfringens type C.