An Observational Study on the Analysis of Vitamin D Deficiency in COVID-19 Patients With No Comorbidities: A Retrospective Analysis

Our study does show an increased incidence of moderate and severe disease in patients with vitamin D deficiency. This is in line with the evidence presented by several observational studies and meta-analyses. A specific randomized controlled trial focused on evaluating vitamin deficiency and the incidence of viral illness may be warranted to further evaluate this topic. Vitamin D deficiency is an easily correctable factor.