) IBR, BVD Types I and II, PI3 and BRSV. Give 2 ml SQ. For primary vaccination, booster with BRSV in 2-4 weeks. Calves vaccinated before 6 months of age should be revaccinated at 6 months of age. Annual booster is recommended. Modified live, requires mixing. Do not use in pregnant cows or calves nursing pregnant cows.