Would you keep your kid home if several classmates have been sick with norovirus?

I’m looking for a sanity check here. We’re all aware that norovirus is going around and it’s bad this year. I picked my 2.5 yo up from her toddler preschool yesterday and was told that 5 kids had vomited and “several more” had diarrhea and fevers, just as a heads up. There was one sick kid being cleaned up when I arrived and the whole room smelled like a mix of cleaning products and bodily fluids.

I decided to keep her home today and potentially tomorrow. My thought is that she has either already caught it, in which case I’d rather she get sick at home than have to pick up a puking kid, or she somehow avoided it and I’d rather her not immediately be re-exposed. I trust the cleanliness of this ECC, but I can’t imagine they can clean everything sufficiently overnight with that many cases in one day.

I am looking for a sanity check because I have OCD with specific contamination/germ/vomiting fears and sometimes I go over the top trying to prevent inevitable illnesses. I know stomach bugs are unavoidable at this age and this time of year, but I don’t want to invite them. I’m able to work from home with her home (even if it’s not my favorite thing), so I’m able to keep her home.

What would you do in this situation?