Hi Don
Sorry to hear that the virius has entered your nursing home.
I have no medical training at all but a very important trial on Covid and Vitamin D defiency has come out of Cordoba Spain a couple of days ago and the results are pretty amazing.You may have missed it on the other side of the Atlantic so I put some links .Its the first Clinical Trial on Vitamin D defiecncy and Covid and here is the link that explains it.Your Vitamin D can be topped up over a few days with Vitamin D tablets as far as I know .I am convinced this research is accurate and its not quackery but solid science .Have a look and decide for yourself and I wish you all the best.Prayers for you ,Hugh

https://www.youtube.com/watch?v=V8Ks9fUh2k8

Here is a further link to the top college in my country Ireland

https://www.tcd.ie/news_events/articles/vitamin-d-could-help-fight-off-covid-19-new-tilda-research/