Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its associated
symptoms, named coronavirus disease 2019 (COVID-19), have rapidly spread worldwide …

Background SARS-CoV-2 infection causes acute respiratory distress, which may progress to
multiorgan failure and death. Severe COVID-19 disease is accompanied by reduced …

Background The role of oral vitamin D3 supplementation for hospitalized patients with
COVID-19 remains to be determined. The study was aimed to evaluate whether vitamin D3 …

The development of vaccines has significantly contributed to the success of disease
prevention. However, there has been a sharp decline in immunization rates since COVID-19 …

Although several clinical manifestations of persistent long coronavirus disease (COVID-19)
have been documented, their effects on the cardiovascular and autonomic nervous system …

An unprecedented global pandemic caused by a novel coronavirus named SARS-CoV-2
has created a severe healthcare threat and become one of the biggest challenges to human …

Although host responses to the ancestral SARS-CoV-2 strain are well described, those to
the new Omicron variants are less resolved. We profiled the clinical phenomes …

Today the coronavirus disease 2019 (COVID-19), caused by severe acute respiratory
syndrome coronavirus-2 (SARS-CoV-2), has become a global health problem. After more …

Background Reports of severe COVID-19 being associated with thrombosis,
antiphospholipid antibodies (APLA), and antiphospholipid syndrome have yielded disparate …

Despite widespread availability of vaccines against SARS-CoV-2 virus, the cause of
Coronavirus Disease 2019 (COVID-19), its uptake in many Arab countries is relatively low …