If I may stray from the subject a little here, I'd like to tell you why I DO continue to vaccinate for distemper. I may not agree with the vet's that it is necessary, but if a cat needs to be hospitallized due to a sudden illness and they are not current on all their shots it can lead to "problems". This happened to me and the vet "needed" to put him in "isolation" and that ended up costing a whole lot more $$$$$ So you should know your vet's policy on current vaccinations for hospitalization (boarding etc.) it costs a whole lot less in the long run to keep them up to date on shots then to pay the extra in a sudden situation.