Extra curriculars and sick kids

Hello!

I’m facing a dilemma, I have my oldest (3yo) in an extra curricular which is pretty expensive as she goes several times a week. It’s been a few weeks in a row that some of the other kids are coming with serious Illnesses. Last week one had hand foot and mouth and I knew so I didn’t send my kid, this week another is throwing up, another kid has a skin issue.... I also have a 6 mo that comes with us and I’m getting really. Really. Uncomfortable with these illnesses. What would you do? I’m contemplating removing my kid and putting them into another businesses extra curricular. Is it on the business for not saying anything? Thoughts. Feelings. Perspectives please.