[AndrewBissell]

> This is not as strong a conclusion as it first sounds, for two reasons.

1. This says nothing about Vitamin D as a cure once you got infected. It might work, or it might not, but this study simply does not address the question at all.

Huh? Everyone I know who thinks vitamin D might be helpful says you need to supplement with it on a consistent, ongoing basis, not try to take big catch-up doses once you get sick or wind up in the hospital. Given how safe and cheap it is (and that adequate vitamin D levels may be associated with a range of other improved health outcomes as well), even a 25% reduction in those risks would be a big deal.