Paulette:
Thank you, and thank you also for asking another question about which I can be reassuring. In the context of fever and a child who also had fever, your rash is almost certainly viral. Some people get a rash with a virus and others don't. It doesn't matter which virus, since it obviously isn't one of the "namedA" ones you list. If it doesn't itch, there's nothing you need to do. It should go away in 2-4 days. In the unlikely event it doesn't, show a doctor, though I doubt you'll need to.
Happy New Year.
Dr. Rockoff