Objective: Vitamin D (Vit. D) deficiency has been demonstrated to be a risk factor in the
development of respiratory tract infection and inflammatory processes. However, the effect of …

Purpose Vitamin D deficiency has been reported as a key factor in the development of
infectious diseases such as respiratory tract infections and inflammatory processes like …

Introduction: Vitamin D deficiency may be linked to an increased susceptibility risk of COVID-
19. However, the data on the link between vitamin D levels and COVID-19 related in …

Purpose The world is experiencing a life-altering and extraordinary situation in response to
the COVID-19 pandemic. There are limited data and controversies regarding the …

Objectives: Although hypovitaminosis D appears to be highly prevalent in patients with
coronavirus disease 2019 (COVID-19), its impact on their prognosis remains unclear …

Coronavirus Disease (COVID-19) is a newly emerged infectious disease that first appeared
in China. Vitamin D is a steroid hormone with an anti-inflammatory protective role during …

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 …

Methods This single-centre observational study evaluated the association between serum
vitamin D levels and negative outcomes in hospitalized COVID-19 patients in Ukraine. We …

Vitamin D deficiency has been associated with the risk for immune-mediated inflammatory
reactions in various respiratory infections. Our study investigated the association between …

Background: The recent severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2)
has resulted in millions of confirmed cases of infection and death. Vitamin D modulates the …