How scientific or medical is this??? "Probably". Other than that let's assume this "probably" is fact then does it matter. That ""endogenous retrovirus" -- a creation of the body's own genetic material that looks and functions partly like a virus" can also be named HIV, or name it something different. It is a disease and and too many died from it (whatever the name you want to call it). PS I am pissed about not being able to see Freddy Mercury live :(
For HIV and also HCV:
"The main proponents of this view are Australian researcher Eleni Papadopulos-Eleopulos and her colleagues, who argue that HIV has never been isolated according to the Pasteur Institute criteria of 1973, and therefore it's probably what's called an "endogenous retrovirus" -- a creation of the body's own genetic material that looks and functions partly like a virus, but is not an infection because it comes from the body's own cells.