Ditto on what Jen L. said.

Ringworm is a SPORE. It is AIRBORNE.

You, and the other kitties, did not have to touch Taz in order to get Ringworm.

This spread from room to room in our shelter. Some had it, some did not. Usually our immune suppressed kitties got it first and the worse. There is a spray that we also used on the shelter kitties to help with the affected area.

Definitely get the pill for the other two. It may be costly, but it will be worth it.