Home Science Over 80 percent of COVID-19 patients have vitamin D deficiency, study findsTechScienceOver 80 percent of COVID-19 patients have vitamin D deficiency, study findsOctober 27, 202095FacebookTwitterPinterestWhatsApp Over 80 percent of 200 COVID-19 patients in a hospital in Spain have vitamin D deficiency, according to a new study.Source: ScienceDaily.com