That is true so far, but remember that pathogens do not intrinsically have fixed disease characteristics. The nature of disease is a contextual matter of both

That is true so far, but remember that pathogens do not intrinsically have fixed disease characteristics. The nature of disease is a contextual matter of both the pathogen and host populations. You have to put on your Hegel hat and really think long and hard about the ramifications of that. Examples: - mRNA vaccinated population + Omicron is not as bad - Without being surrounded by lots of ongoing chicken pox to keep the immune system vigilant, one is more likely to get shingles as a non-old person - Chicken pox and other childhood diseases are much worse if one gets them as an adult. (Shingles is not like getting chicken pox, i.e. the virus for the first time vs reactivated latent virus as an adult.) - Smallpox and other old world diseases were far worse for new world peoples. The point here is, what is COVID-19? and what is SARS-CoV-2? are two distinct questions, and both varying greatly over time. Any fixed atomistic characterization is one hell of a leaky abstraction, and will just lead you astray.