I don’t want to be rude, but have you looked into the established scientific knowledge which has accumulated on the impact of SARS-CoV-2 on the human body?

I really truly don’t want to be rude. I only want to point to the existence of literature on this.

There are results from molecular biology, from the various medical specializations, from population-scale studies.

There are certainly symptoms and biomarkers. There are documented changes to physiology, and there exists at least some information on how to help the body recover.