Abstract Background/introduction COVID-19, a novel coronavirus outbreak starting in China,
is now a rapidly developing public health emergency of international concern. The clinical …

The COVID-19 pandemic has caused huge socio-economic losses and continues to threat
humans worldwide. With more than 4.5 million deaths and more than 221 million confirmed …

Background 2019 novel coronavirus disease (COVID-19) has posed significant threats to
public health. To identify and treat the severe and critical patients with COVID-19 is the key …

Background and objectives With the increase in the number of COVID-19 infections, the
global health apparatus is facing insufficient resources. The main objective of the current …

Objectives Existing findings regarding the relationship between comorbidities and the
severity of coronavirus disease 2019 (COVID-19) are inconsistent and insufficient. The aim …

Evidence shows that a substantial proportion of patients with COVID-19 experiences long-
term consequences of the disease, but the predisposing factors are poorly understood. We …

Our understanding of the Coronavirus disease 2019 (COVID-19) continues to evolve and
there are many unknowns about its epidemiology. This study aims to synthesise case fatality …

Objectives The main aim of this study was to find the prevalence of mortality among
hospitalized COVID-19 infected patients and associated risk factors for death. Methods …

Current evidence on COVID-19 prognostic models is inconsistent and clinical applicability
remains controversial. We performed a systematic review to summarize and critically …

Background Defining socio-demographic factors, clinical presentations and underlying
diseases associated with COVID-19 severity could be helpful in its management. This study …