The only way to stop a virus from attaching to human cells and multiplying is to confront it with a healthy, replete immune system. The problem with covid-19 is that it has been engineered to avoid detection by the immune system to more readily infect the body. This can lead the immune system to overreact or underreact, especially in people with underlying health conditions and immune deficiencies, causing blood oxygen levels to fall, breathing difficulties, and the onset of sepsis-like reactions. This is why antiviral medicines are so important, for use in the home at the onset of symptoms and for use in hospital settings to speed up recovery and prevent death.
Fauci green lights RNA therapy vaccine but downplays HCQ, even though he knew about its effectiveness for coronaviruses 15 years ago.