[TOMT][BOOK] Children’s paperback about diseases?

I faintly remember this paper back book about different diseases. The illustrations were realistic-ish and there was this [pretty creepy looking] doctor teaching kids about mumps, measles & rubella. I think the cover was the doctor holding hands with the kids while standing on the world? Idk 🤷🏾‍♀️ I might’ve found it at a book fair, so maybe it was published by scholastic? I really wish I could remember, it honestly feels like a fever dream