I agree. There is ongoing research into whether the correlation of low vit D is just the association with other comorbidities or whether there may be an indepen

I agree. There is ongoing research into whether the correlation of low vit D is just the association with other comorbidities or whether there may be an independent risk to low levels. I expect additional studies to result in the coming months that will show more evidence on supplementation before patients are sick enough to be hospitalized. My gut feeling is that it won't make a difference, but until we have the data I can't know for sure. This study, however, makes me feel more confident that I am not hurting a patient by withholding vit D supplementation if htey are admitted with severe Covid.