We are praying that the ringworm has been vanguished as its a royal pain in the neck,
I remember volunteering at the shelter where there was a series of communal cages and that was happening all the time.
Several times I had to take meds and give preventitive meds to my 2 Cats Pouncer and Scrappy.
2 Cats , imagine how long ago that was.
Good luck to you and your Clowder.