[Klinky]

I don't think I'd classify any of those studies as "very strong evidence". Lots of studies in many different environments(some uncontrollable) measuring different things at different dosages. It doesn't exactly result in finding any particular conclusion, certainly not "Vitamin D supplementation effectively prevents, reduces harm or cures COVID".

[nradov]

You're arguing against a straw man. I never claimed that vitamin D cures COVID. Go back and read the studies again.

[Klinky]

I didn't say you said that, but looking at study summaries that state things like "high-dose cholecalciferol supplementation led to SARS-CoV-2 RNA negative status" is why I mentioned "cure".