The seasonal cycle of respiratory viral diseases has been widely recognized for thousands
of years, as annual epidemics of the common cold and influenza disease hit the human …

The outbreak of COVID-19 has created a global public health crisis. Little is known about the
protective factors of this infection. Therefore, preventive health measures that can reduce the …

Importance The efficacy of vitamin D 3 supplementation in coronavirus disease 2019
(COVID-19) remains unclear. Objective To investigate the effect of a single high dose of …

Immune support by micronutrients is historically based on vitamin C deficiency and
supplementation in scurvy in early times. It has since been established that the complex …

The COVID-19 pandemics is posing unprecedented challenges and threats to patients and
healthcare systems worldwide. Acute respiratory complications that require intensive care …

WHO declared SARS-CoV-2 a global pandemic. The present aim was to propose an
hypothesis that there is a potential association between mean levels of vitamin D in various …

Emerging evidence supports a link between environmental factors—including air pollution
and chemical exposures, climate, and the built environment—and severe acute respiratory …

Low levels of micronutrients have been associated with adverse clinical outcomes during
viral infections. Therefore, to maximize the nutritional defense against infections, a daily …

The SARS-CoV-2 virus responsible for the COVID-19 pandemic has generated an explosion
of interest both in the mechanisms of infection leading to dissemination and expression of …

Coronaviruses are an extensive family of viruses that can cause disease in both animals
and humans. The current classification of coronaviruses recognizes 39 species in 27 …