Vitamin D and Covid 19

I dare say this is not a new idea to many GNers - it isn’t to me - but since there’s an article in today’s Times I though it worth mentioning.

A study in Spain has shown that Covid 19 patients are almost twice as likely to be deficient in Vitamin D as a comparable population without the virus.

This idea has been around for quite a while, so why on earth there isn’t govt. advice about it, I don’t know. It could also explain, at least partly, why BAME people are more susceptible, given that they’re often more likely to be Vitamin D deficient anyway, given our so often clouded skies.