New findings on ambient UVB radiation, vitamin D, and protection against severe COVID-19

New research has examined the association between vitamin D and COVID-19, and found that ambient ultraviolet B (UVB) radiation (which is key for vitamin D production in the skin) at an individual's place of residence in the weeks before COVID-19 infection, was strongly protective against severe disease and death.

source https://www.sciencedaily.com/releases/2021/09/210915095408.htm