I formulate this idea when reading the following speculations at vDare.com, which noted that all of the people dying from the coronavirus are Han Chinese.
https://vdare.com/articles/do-you-know-all-coronavirus-victims-appear-to-be-chinese-thought-not?scroll_to_paragraph=5
“In fact, as far as I can tell, all of the confirmed cases have been of Chinese people. According to Sri Lankan radio, the case in Sri Lanka was a “Chinese tourist” [Sri Lanka suspends visa on arrival for Chinese travellers after confirmed case of Corona virus, News On Air, January 28, 2020]. So are the cases in France and the one in the United Arab Emirates [Coronavirus is spreading as FIVE people in France are now confirmed to have the illness and Chinese traveller from Wuhan is quarantined in Finland, by Sam Blanchard, Mail Online, January 29, 2020]. If it is true that only East Asians are dying of, or even catching, Corona, that would be consistent with long-established race differences in the susceptibility to such viruses. This has been explored in a fascinating study, by a group of Chinese researchers led by C. L. Chen of Soochow University, entitled: Ethnic differences in susceptibilities to A(H1N1) flu [African Journal of Biotechnology, 2009]. The authors begin by noting that, from an evolutionary perspective, there is every reason to expect there to be ethnic or race differences in the susceptibility to different pathogens. Races—or, as they call them, “ethnic groups”—are breeding populations, long-separated, usually by geography, who are, therefore, genetic clusters adapted to different ecologies. Because they were exposed to different pathogens in prehistory, there are very likely to be race differences in susceptibility to the pathogens and in how well the immune system can fight them.