Guerrero moves to YELLOW

The error in your assumption is that all “human bodies” are the same. They aren’t. Based on these differences in sex, age, physiognomy, co-existing illnesses the individual effects will be vastly different.

8/30/2020

@Timmac

It was a generalized statement.........
The "sameness" meaning that all human beings have 1 heart, 2 kidneys, 2 lungs, 1 liver, etc., etc.

From there, the other things you mentioned, obviously do come into play, leading to the virus having different effects on people based on those variables.
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Fast forward, 1 year from now, let's say a "safe" vaccine becomes available for the Covid-19 virus.
Is it possible that, for example, it will work only for a human being in Russia, Italy, and Africa, but not for people in the USA, México, Brazil, etc?