Single dose protection against 7-way blackleg and pinkeye in cattle 2 months of age or older. For prevention of Clostridium chauvoei, septicum, novyi, sordellii, perfringens Types C & D . Give 2 ml SQ prior to the onset of pinkeye season. Calves vaccinated prior to 3 months of age should be revaccinated at weaning or 4-6 months of age. May cause injection site swelling. Annual booster is recommended.