Background Vitamin D deficiency has been suggested to favor a poorer outcome of
Coronavirus disease-19 (COVID-19). We aimed to assess if 25-hydroxyvitamin-D (25OHD) …

Objective Preliminary findings suggest a relationship between lower serum 25-
hydroxyvitamin D [25 (OH) D] levels and incidence and severity of COVID-19. The aim of this …

Objective Studies have demonstrated a potential correlation between low vitamin D status
and both an increased risk of infection with SARS-CoV-2 and poorer clinical outcomes. This …

Objectives Vitamin D deficiency was previously correlated with incidence and severity of
coronavirus disease 2019 (COVID-19). We investigated the association between serum 25 …

Background As an immune modulator, vitamin D has been implicated in the coronavirus
disease‐2019 (COVID‐19) outcome. We aim to systematically explore the association of …

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 …

Purpose Low vitamin D in COVID-19 have been related to worse outcomes. However, most
of the studies conducted so far were not-controlled and retrospective, including biases …

Introduction: There is increasing scientific interest in the possible association between
hypovitaminosis D and the risk of SARS-CoV-2 infection severity and/or mortality. Objective …

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