Pro-Bac 4+IBRk & BVDk has been shown to be effective for the vaccination of healthy cattle three months of age or older against Infectious Bovine Rhinotracheitis (IBR), Bovine Viral Diarrhea Type 1 (BVD I), Haemophilus somnus, Mannheimia haemolytica Type A-1, Mannheimia haemolytica Type A-6 and Pasteurella multocida Type A-3. See product label for complete product details.