Kristen,
Cat's will avoid a sick cat. It happened at my house the last few days with Butterscotch. Skinny and Thumper scattered real fast.

Our new vet does the first round of FelV vaccinations after that if they are strictly indoors only they don't continue. Up until the time we switched to our new vet everyone got FellV boasters etc yearly.

I have no idea what our new vet is going to do now with Skinny and Thumper since Butterscotch died for Feline Leukemia. Those and other questions will be answered when I take Skinny and Thumper to be re-tested.

In my opinion, I strongly urgue the first round of shots.