>>>> You can have bloodtests (titers) done on your horses for many of the vaccines to see if they still have immunity but since the titers cost more than the vaccines, most people won't bother.
Not only are the titers expensive, but it's another pin-prick for the animal to endure, and more time to wait on the results - and if the titers aren't high enough, that wasted time is time the animal is vulnerable. And it still takes a lot of time and funding to prove exactly where the titer levels need to be, just as it takes time and funding to prove how long the vaccines last. How do we find the point where immunity stops? Lots of time, lots of money, and animals have to get sick and even die. This isn't an easy or quick study... Karen Thomas, NC
