You’re ignoring the fact that this virus Is an order of magnitude more lethal than the flu, and I would guess that most individuals in poorer countries skip the vaccine altogether.
Sorry but are you an epidemiologist or virologist? The armchair advice you're giving very much belies what established experts in the field are saying. It also ignores all the cases of respiratory and cardiac complications in not just the elderly. Is "very old" equivalent to "older than 20" for you?
Being old and having underlying illnesses is by far the biggest reason for deaths in NYC, with Hypertension and Diabetes being among the top risk factors.
Worryingly, in Sweden in the capital Stockholm, around 15% of the staff caring for the elderly have had Corona virus.
