P.G.
My 4 year old had strep for the first time and had no fever. His appetite dropped and his tonsils were huge, but otherwise, he was pretty normal acting. I took him to the doc cause his tonsils freaked me out and he had MAJOR strep - the doc was amazed that he was as peppy as he was. He bounced back and I got it 2 days later and it floored me - sigh!
If you can teach him not to touch his face, that'll help a lot - it's really hard to do, though. It's the germs on the hands and touching the eyes/nose/mouth - mucus membranes - that spread the sick germs.
Hope he feels better soon!