This was a cost for pandering to his maskless base that i don't think he was prepared to pay. Trump knew early on just how contagious and virulent Covid-19 was, but playing to his moronic base was more important than anyone's safety - including his own. I'm sorry he's sick which, at minimum, will curtail his campaigning - but if any American deserved this illness, it was he.
https://www.cnbc.com/2020/10/02/pres...ronavirus.html