> The rapid increase of vitamin D levels in covid-19 infected patients with vitamin D deficiency (< 30ng/ml), as well as vitamin D supplementation for doctors,

> The rapid increase of vitamin D levels in covid-19 infected patients with vitamin D deficiency (< 30ng/ml), as well as vitamin D supplementation for doctors, nursing staff and risk patients to a healthy blood level of 40-50ng/ml, is - in the authors' view - the only conceivable solution to effectively contain the corona pandemic. Research paper warning alarm sounding here.