Let me guess. Vitamin D, fresh air and sunshine encourage our cells to produce the protein that defeats viruses.

Our immune systems have evolved to keep us safe over millions of years (without drugs). I bet it all comes down to doing the simple, common sense things.

Of course, the pharmaceutical industry doesn't make money ? from common sense cures. They will need to create a series of shots that have harmful effects which we will be mandated to take to duplicate the effects of fresh air and sunshine.