Background: Several studies suggest an association between serum 25-hydroxyvitamin D
(25OHD) and the outcomes of Severe Acute Respiratory Syndrome Corona-Virus-2 (SARS …

Background Disease severity and mortality rates due to COVID-19 infection are greater in
the elderly and chronically ill patients, populations at high risk for vitamin D deficiency …

Purpose Vitamin D deficiency/insufficiency may increase the susceptibility to coronavirus
disease 2019 (COVID-19). We aimed to determine the association between vitamin D …

Background: Open Access Editor's Choice Systematic Review COVID-19 Mortality Risk
Correlates Inversely with Vitamin D3 Status, and a Mortality Rate Close to Zero Could …

Vitamin D is associated with biological activities of the innate and adaptive immune systems,
as well as inflammation. In observational studies, an inverse relationship has been found …

Introduction Vitamin D levels have been reported to be associated with COVID-19
susceptibility, severity, and mortality events. We performed a meta-analysis of randomized …

In this review we summarize the impact of bolus versus daily dosing of vitamin D on 25 (OH)
D and 1, 25 (OH) 2D levels, as well as on key countervailing factors that block vitamin D …

The pathogenicity of the current coronavirus disease (COVID-19) shows postulates that
optimal status of essential nutrients is crucial in supporting both the early viraemic and later …

Background The relationship between vitamin D status and COVID-19-related clinical
outcomes is controversial. Prior studies have been conducted in smaller, single-site, or …

The novel coronavirus severe acute respiratory syndrome (SARS-CoV-2) has progressed
rapidly from an outbreak to a global pandemic, with new variants rapidly emerging …