[DanBC]

See also this: https://www.sciencedirect.com/science/article/pii/S187140212...

> COVID-19 appears to disproportionately affects black and minority ethnic individuals. The underlying mechanism is unknown.

> One potential mediator could be their higher prevalence of apparent vitamin D deficiency.

> We explored whether blood 25 hydroxyvitamin D (25(OH)D) concentration was associated with COVID-19 risk.

> We found no evidence that (25(OH)D) explains susceptibility to COVID-19 infection, either overall or between ethnic groups.

[martingoodson]

It's worth noting that this study only looked at risk of infection, not the severity of infection. The grandparent comment was about severity/death.