Case-Bac from Colorado Serum Company is a Corynebacterium pseudotuberculosis bacterin-toxoid suspension formulated for sheep. This sheep vaccine is supplied in a 100 mL multi-dose vial with a 2 mL per dose subcutaneous administration. A practical choice for flock managers seeking reliable livestock health products, it integrates smoothly into routine flock care under veterinary guidance. No prescription is required in Canada; a prescription is required in Quebec. Always follow the product label and consult your veterinarian for use in your flock.