I can totally understand how u feel. I also get worried when they go excursion like what if he don't behave in the bus and had accident or didn't hold hands when crossing the road since the teacher can only handle a handful of kids.
Even not going to indoor playground, my kids caught hfmd when they use the nursing room to change diaper.
I guess if it happens it happens, no matter how u protect them. Can only ensure or teach them to use the sanitizer before and after play.
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