I decide what vaccines to give on the basis of comparing the benefit to the risk.
I feel that the risk of my cats catching and passing on distemper is greater than the risk of the vaccination because of how it is transmitted, so I do the combo vaccine every three years.
I feel that the risk of my cats contracting feline leukemia is negligible, because they don't come into direct contact with other cats, so the risk of that vaccination outweighs the benefit, and I don't give it.
I also feel that the chance of my cats contracting rabies is negligible, but rabies vaccination is the law here, and I feel that the risk of my cats being outside the law is greater than the risk of the vaccination, so I do it every year as required.
The Boys: Maisie, Zephyr, and Cullen.