There seem to be many, many varied opionions on which shots you actually need, how often to give them and which ones are unnecessary. I know to get the coggins test and rabies shot, but what would you put on your list? Also, do all these vacines really just last 6 month? Do you really have to do them twice a year? We go to shows, hunter paces and trail rides and encounter a lot of different horses each year. At the same time, there's no sense spending money for stuff I really don't need.