maybe best single source of scientifically rigorous natural health info, worth looking over(zinc, selenium, Vitamin D3):
https://lpi.oregonstate.edu/mic/nutrient-index
https://lpi.oregonstate.edu/mic/vitamins/vitamin-D#COVID-19
nutritional approaches:
https://articles.mercola.com/sites/articles/archive/2020/11/10/coronavirus-n-acetylcysteine.aspx
https://articles.mercola.com/sites/articles/archive/2020/10/26/zinc-for-covid.aspx
more interesting covid info:
https://www.tampabay.com/news/health/202…tter/
https://www.express.co.uk/news/world/123…tient
https://www.ibtimes.sg/thailand-may-have…38757