Recent studies showed that a low 25-hydroxyvitamin D (25 (OH) D) level was associated
with a higher risk of morbidity and severe course of COVID-19. Our study aimed to evaluate …

Background The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the
etiological agent of coronavirus disease 19 (COVID-19), a respiratory infection that, starting …

The worldwide pandemic of 2019 novel coronavirus disease (COVID-19) has posed the
most substantial and severe public health issue for several generations, and therapeutic …

Background Hypovitaminosis D has been suggested to play a possible role in coronavirus
disease 2019 (COVID-19) infection. Methods The aim of this study is to analyze the …

Main cause of severe illness and death in COVID-19 patients appears to be an excessive
but ineffectual inflammatory immune response that may cause severe acute respiratory …

Background To investigate the association between serum 25-hydroxyvitamin D levels and
its effect on adverse clinical outcomes, and parameters of immune function and mortality due …

Background Vitamin D status has been implicated in COVID-19 disease. The objective of the
COVID-VIT-D trial was to investigate if an oral bolus of cholecalciferol (100,000 IU) …

There is now sufficient evidence to support that vitamin D deficiency may predispose to
SARS-CoV-2 infection and increase COVID-19 severity and mortality. It has been suggested …

Introduction: Low serum vitamin D has been shown to be a risk factor for Coronavirus 2019
(COVID-19). The aim of this study was to assess the effects of high dose vitamin D …

COVID-19 is characterized by marked variability in clinical severity. Vitamin D had recently
been reviewed as one of the factors that may affect the severity in COVID-19. The objective …