Genetic puzzle on coronavirus

I had read a couple articles that mentioned Africans having fewer Corona virus cases and deaths, and I assumed that this was because of the sunlight/living outdoors instead of inside houses in the winter as in China and the USA/Europe, or maybe because a lot of Africans take anti malarial medicine to prevent getting that disease, or maybe just that they haven't done enough tests and people are sick without going to hospitals and getting counted.

But StrategyPage notes:

...Chinese researchers found that Africans are less likely to catch covid19 because they have one fifth as many cellular receptors in their lungs than Chinese. That difference enables covid19 to cause breathing problems more, or less, readily. ...

  Lung damage is the most frequent cause of death among covid19 victims. So far Africa, with 18 percent of the world population has only suffered about 0.3 percent of the covid19 infections. Africans are not immune, just less likely to get in infected or suffer the breathing problems that cause most covid10 related death

this doesn't mean they can't get sick or die, but merely that the disease might be less fatal in certain populations.

One wonders if this observation is seen in the African diaspora on other continents.