The improvements made in animal health vaccines to prevent sickness have improved immensely over the years. One of our most effective practices to keep calves healthy is to give them “booster” shots in the fall each year. Just like human vaccines some cattle vaccines need to be given more than once too. Some people call it pre-conditioning. Whatever you like to call it we believe it is an effective tool to increasing the health of our herd. Some of our favorite products come from Zoetis https://www.zoetis.com/animal-health/farm-animal-health.aspx. Zoetis makes products to keep our animals from getting sick and products to treat them if they do become sick.