Lack of vitamin D might increase risk for COVID-19, University of Chicago researchers find

https://www.chicagotribune.com/coronavirus/ct-coronavirus-vitamin-d-covid-university-of-chicago-research-20200903-dr3xomc2ybd5ppogayhkb66gtu-story.html#nt=pf-double%20chain~top-news-chain-2~flex%20feature~curated~covid-thu-1030a~DR3XOMC2YBD5PPOGAYHKB66GTU~1~2~1~8~art%20yes