I have heard that Vitamin D3 has quite a positive impact, Corona or not. I take it in general from September to April after a blood test stated I was quite low. Low Vitamin D levels are an epidemic in and of itself. It helps with the sunlight we aren't getting!
I found out a second guy in my men's group has tested positive for Corona last night, six days after we last saw him. Today is day seven. We were all wearing masks the entire time and he had no symptoms when we saw him. I asked whether or not we should be quarantining and was told we were fine as long as we had the masks.
I looked up my county here in Ohio: Ninth out of 88 (we were around 20th for the longest time) - 3,000 cases (pandemic-long) for people 40-49....almost 60 hospitalized, and ZERO deaths.