Please don't take her out when she has a contagious virus. I'm saying this as you may cause someone great inconvenience (or more serious result) if they have to stay home with a child or get it themselves and have lowered immunity for whatever reason.
I had a friend whose children got this at 5 and 6. They were SO SO miserable and couldn't figure out where they got it but it was probably from someone in public somewhere. (a sneeze, a doornob, something like that)
How about cool washclothes, fans, kiddy pools, teething rings, frozen washclothes to suck on sprinklers etc. to cool off.
You are making me rethink our Family membership to the public pool......