I would like to know if epidemiologists have taken into account the relative density of geriatric people among the population in cities where covid-19 fatalities are higher than other places.
I may be incorrect in saying that certain countries or cultures commonly have 3 or more generations living in single households - grandchildren, children, parents, grandparents all living in one household is quite common in places like China and Italy - I think. Tell me if I'm mistaken about that please.
This customary familial dynamic would obviously have a direct affect on the numbers of elderly people contracting any communicable disease you care to talk about. We already know that an elderly person infected with COVID 19 has an extremely high probability of NOT surviving the infection.

In USA by contrast families tend to scatter far away one generation from the other. Mom, dad and kids live here - grandma and grandpa live over there...typical or customary arrangement here in USA.
This IMHO is worth talking about. It makes better sense than does the "climate change" factor talked about in this video.