So SARS was discovered during 2000-2003, but it was a very clumsy and unreliable infection. America, and then America through China played with SARS, attempting to inject various genetic strands to make the ‘gain-of-function’ or infectability/lethality stronger. One place where the new COVID binds to is the ACE-2 receptor (which is involved with regulating blood pressure).
The human body is an amazing machine and even receptors like ACE-2 have racial variants (small differences in genetic code) that allow more or less infectability due to genetic make up. The graphs above show a marked higher effectiveness in infection of whites/Indians and a markedly lower effectiveness in infection of a certain type of Jews.
This, of course, is now being spun as some sort of racism, when the information comes straight from the Cleveland Clinic (I believe).
Almost all diseases show measurable "disparate impact" between different racial and ethnic groups. It should not be surprising that this would occur with COVID-19. It does lead to politically incorrect findings if such things are studied objectively.
The deadly serious questions is: Was COVID-19 engineered for lethal effects against specific ethnic groups?
Yes, that nightmare is a serious question which should be asked and answered. Such projects have been considered since the late 1940's but no technology was available to implement them. The "gain-of-function" research today can provide the necessary technology, and there are scientists willing to work on such things. They don't really understand how those things work. They are vicious children playing with explosives.
"Now you know it works. Any Questions?"
(Stephen King, The Stand, 1978)