A lot of papers and clinical trial results are posted there. And given the technical nature of the content a lot of people in the medical field hang out there and comment. Much of it is a bit over my head, but it's a good for learning.
For a sample, here are a couple of posts there today:
https://www.nature.com/articles/s41564-020-00835-2
Therapeutically administered ribonucleoside analogue MK-4482/EIDD-2801 blocks SARS-CoV-2 transmission in ferrets