Purpose: It has been shown that low Vitamin D serum concentration is associated with
increased pneumonia and viral respiratory infections. Vitamin D is readily available …

Objectives: Several meta-analyses have suggested the beneficial effect of vitamin D on
patients infected with SARS-CoV-2. This umbrella meta-analysis aims to evaluate influence …

Abstract Coronavirus disease 2019 (COVID-19) has a wide-ranging spectrum of clinical
symptoms, from asymptomatic/mild to severe. Recent research indicates that, among several …

Introduction Vitamin D status is related to risks of influenza and respiratory tract infections.
Vitamin D has direct antiviral effects primarily against enveloped viruses, and coronavirus is …

COVID-19 symptoms vary from asymptomatic cases to moderate and severe illness with
patients needing hospitalization and intensive care treatment. Vitamin D is associated with …

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 …

Aims The aim of this systematic review and meta‐analysis was to investigate the effect of
vitamin D supplementation on mortality and admission to intensive care unit (ICU) of COVID …

The coronavirus disease 2019 (COVID-19) pandemic caused by the Severe Acute
Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) has become a global health crisis and …

Vitamin D attenuates inflammatory responses to viral respiratory infections. Hence, vitamin D
deficiency may be a highly significant prognostic factor for severity and mortality in COVID …

Background Several studies have suggested the positive impact of vitamin D on patients
infected with SARS-CoV-2. This systematic review aims to evaluate the effects of vitamin D …