[Ellie May]

Originally Posted by Woogie Man

Half doses shouldn't be given. What you are trying to achieve with vaccines is to provoke the immune system into producing antibodies. Vaccines are measured by the count of virus cells in them so if you only give half you aren't giving the proper count of virus to provoke the immune system. Giving half doses is like not finishing a course of antibiotics. You may cause more resistant strains to develop. Vaccines do not follow the same logic as medicines. Dosage of vaccines is figured by virus cell count, not the body weight of the dog.

This is really the only explanation that I am comfortable with right now.
A vaccine manufacturer would be making more money if they used less virus because they could charge the same. They can't do that because the vaccine wouldn't be adequate. In other words, they may be putting in too much of a virus but the 100 pound Great Dane would be just as overdosed as a Yorkie because an immune system is an immune system... They really make the rabies vaccine strong and although I am not saying it should be cut in half, that one might be able to be.