Vira Shield 6 + Somnus works to prevent IBR, BVD Types I and II, PI3 BRSV and Haemophilus somnus in healthy cattle, 3 months and older. This 5-way cattle vaccine includes the somnus vaccine for ease and convenience. Give 5 ml IM to cattle 3 months of age or older. Repeat in four to five weeks and once annually. Vaccinate dairy cows at dry-off. Safe for pregnant cows.