I can comment on my own methods of protecting against the Covid-19 virus. I do not suggest anyone to do the same.
(1) 1oz 10ppm colloidal silver daily
(2) frequently drink 8 oz or more of freshly made ozonated water from a water ozonating machine
(3) electromagnetic pulsing of the lymph nodes
(4) micro current electrification of the blood via the wrist for 2 hours daily over 90 days ( much like electronic muscle stimulation but at the wrist )
I have noted that after doing these treatments extreme energy and well being was a result. The down side is some toilet time while detoxification takes place. I do not get sick anymore and enjoy good health each and every day.
I wish the very best for everyone but to each his own.