Has anyone's LO been diagnosed with this?

A child in my daughter's classroom at daycare has been diagnosed. I just found out today (they found out Monday) because my daughter had a case of diarrhea and she stayed home yesterday. Well yesterday morning, I saw a couple of bumps on her leg and thigh and didn't think much of it until today when the teacher told me about the child that has this.

As far as I know, she has no blisters in her mouth. I know for sure there aren't any on her feet or hands. I will check her for sure today when she gets home. I'm freaking out! Oh the joys of daycare

ETA: I plan on calling her pediatrician to get her fully checked out.