[rolph]

the incubation and transmission of the corona virus is not tightly coupled to morbidity, this virus moves to another individual before debilitating symptoms occur.

the virus will not become weaker as time goes on, it will have less variation to call upon for evasion of host defenses.

the major selective pressure on this virus appears to be exhaustion of variant production bringing the cat and mouse game of new viral antigen sequence vs antibody respecification to a stalemate, and the virus must move on [spillover] to a new host species. The ability to occur in many novel variations, and eventually spillover from a host species to a conspecific host is how this virus persists.