Vitamin D deficiency has long been associated with reduced immune function that can lead
to viral infection. Several studies have shown that Vitamin D deficiency is associated with …

OBJECTIVES Although vaccination has started, coronavirus disease 2019 (COVID-19)
poses a continuing threat to public health. Therefore, in addition to vaccination, the use of …

Objective The relationship between 25-hydroxyvitamin D3 (25 (OH) D), the surrogate marker
for vitamin D3, serum concentration and COVID-19 has come to the forefront as a potential …

Background As effective medication to treat COVID-19 is currently unavailable, preventive
remedies may be particularly important. Objective To examine the relationship between …

The COVID-19 pandemic poses an unprecedented threat to human health, health care
systems, public life, and economy around the globe. The repertoire of effective therapies for …

Evidence suggests that vitamin D supplementation could potentially be effective either in
treatment or prevention of coronavirus disease 2019 (Covid‐19). Indeed, several studies …

Importance Vitamin D treatment has been found to decrease incidence of viral respiratory
tract infection, especially in vitamin D deficiency. It is unknown whether COVID-19 incidence …

Background The associations between vitamin D and coronavirus disease 2019 (COVID-19)
infection and clinical outcomes are controversial. The efficacy of vitamin D supplementation …

The world is in the grip of the COVID-19 pandemic. Public health measures that can reduce
the risk of infection and death in addition to quarantines are desperately needed. This article …

Objective To systemically review and critically appraise published studies of the association
between vitamin D supplementation or serum vitamin D level and susceptibility to SARS …