There have been massive conversations here about immunology and virology by confidence-men who have zero understanding of the human immune system. Even the most well educated medical scientists recognize there is a giant amount of uncertainty surrounding SARS-CoV-2, much of which confidence-men show up and attempt to resolve by lying, usually to advance some political/economic agenda.
Have some respect for the scientific process and its pursuit of slowly unraveling the fog surrounding pristine knowledge. Grow comfortable with uncertainty and don't assume you have the answers. Be a little bit humble in the face of this virus that has caused so much suffering.