Study identifies what makes children more susceptible to severe COVID-19; each risk factor listed is related to vitamin D deficiency Key Points Among children with a vitamin D level below 20 ng/ml (50 nmol/L), 31% had moderate to severe COVID-19 symptoms, compared to only 18% with moderate symptoms (none classified as severe) for those with … Continue reading Risk Factors for Severe COVID-19 in Children Are Related to Vitamin D Deficiency