Pfizer - For vaccination of  healthy cows and heifers as an aid in preventing IBR  BVD Type 1 & 2 BRSV ,  Pi3 and 5 strains of Lepto. May be administered to pregnant cattle provided they were vaccinated according to label directions. May be also administered to calves nursing pregnant cows provided their dams were vaccinated according to label directions in the last 12 months. Dosage: 2ml IM followed by BoviShield BRSV in 3-4 wks. Revaccinate annually. 21 day withdrawal.