My only issue was a possible bad batch of C-16, not C-19...
After past bouts with Malaria and the Dengue Fever many decades ago and the large amounts of Chloroquine, Doxycycline, Quinine and Hydroxychloroquine I have taken throughout the years, I am probably immune to the Covid stuff. The worst was the Dengue Fever; had it twice while living in Puerto Rico.