I could be wrong - but, Omicron is different - my guess would be that if he's improving after having some days of symptoms - then, the worst probably has passed with a tad of luck.
early variants, particularly in non vaccinated who had serious symptoms - different kettle of fish - I heard a heap of tales there of inconsisentcy
I was symptomatic for many days over the xmas period - I've no idea if it was covid or a cold - rat negative - only one.
see what happens.
oh - for gods sake tell your son and get him to tell his friends - NO BIG gym or run or bike stuff for - quite a while - min. about 2 weeks - check the latest research (absolutely no heavy weights, bikes or endurance stuff)
