That’s interesting. I just googled and found this:
https://www.medpagetoday.com/infectiousdisease/covid19/85929
“In the United States, reports have shown that African Americans may be dying at a higher rate from COVID-19 than the rest of the population, and 10% of African-American males are affected by G6PD deficiency.”
Also more common among Mediterraneans which may partially explain why Spain and Italy had such a tough time with COVID-19.
someone here has that deficiency but dont remember who
I suspect a lot of people who have it dont know it.