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Originally Posted by Ellie May  I've found titers to be a waste of money here. The distemper vaccine wouldn't come in three year (like rabies). It's all the same. |
Titers show humoral immunity, but not cellular. A dog can have a positive titer (humoral imm), but NOT have cellular immunity (therefore, they could still be vulnerable to the disease). On the same note, a dog can have a negative titer (no humoral imm via titer), but have cellular immunity (therefore, considered able to provide cellular resistance to the disease).
So, I agree w/ Crystal...titers don't tell you a whole lot. Sometimes, they can be useful in strays - especially if you're concerned about overvaccinating a vulnerable stray. But again, they only confirm limited info in terms of actual immunity.