How should I handle this

I live in a duplex and Rent from my uncle. He lives next door. Yesterday he came over, and was holding my 9 month old.

She was pulling on his shirt and touching his neck, and putting her fingers in her mouth. I didn't notice it before, till I grabbed her from him to feed her that he has ringworm and she was touching it! I instantly washed her hands. Then asked him about it and he said he dunno what it is. I told him that it looked like ringworm, and that it's very contagious, and I didn't want my kids getting it. You can pass it on everything.

He didn't listen and tried to pick her up again, which I stopped him.

I sorta want to be like don't come over till it's gone. .

I washed everything that he touched, including the couch pads.

Would it be mean of me to tell him that?