Adaptability is a “learned” (genetic) response refined by the qualitative ebbs and flows of environmental necessities like air, water and food.
CV-19 is the name given to the human herd’s response to the increasing levels of toxicity in air, water, and food, lack of physcial activity, in collaboration with adverse levels of societal stress like crap jobs and the imbalance in wealth and concomitant opportunities between the wealthiest and “average ordinary” people, and the self-defeating self-talk that inhabits the minds of the “victims”.
Nature does not need a “virus” to remove the weakest among us from the gene pool.