So your child can go to school with this rash.
Most teachers test immune to the virus by the time they have been teaching a few years.
There may be some low grade prodromal symptoms of headache, low grade fever, or body aches - just like a zillion other viruses. Often the child has no complaints whatever until the rash suddenly appears. There can be complications for the infection in patients with hemolytic anemias , in pregnant women, or immunosuppressed patients. However, by and large it is a trivial event.