COVID-19 and Vitamin D - 14 studies as of
https://c19study.com/d
Includes overviews and hyperlinks to the actual studies
Prbably a lot of overlap with VitaminDWiki, etc
Image of webpage Oct 16

See also in VitaminDWiki
COVID-19 treated by Vitamin D - studies, reports, videos
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Many clinical trials are underway which are testing Vitamin D to fight COVID-19
