This thing is incredibly contagious and you can give it to people before you start showing symptoms. Most of us are going to get it. I have.
We don't know he had it but he had that fever where the room seems hot rather than cold, the cough, couldn't really eat just liquid. I went to the doctor right away because of where I work they have been sending emails about covid-19 very early as we have offices in China in affected areas and affected co-workers. So people were already pretty sensitive - Doctor said I was fine and so far i haven't got sick God willing that stays the same.
It cleared up in about 7-8 days he missed a whole week of school.
I makes sense to me that these things send out a stealth wave and early susceptible victims either A) don't get it or B) they get it an their death or getting very sick is initial attributed to their pre-existing condition