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

Background: An ongoing outbreak of pneumonia associated with the severe acute
respiratory coronavirus (SARS-CoV-2) emerged in December 2019 in Wuhan, China …

Abstract Background Coronavirus disease 2019 (COVID-19) is an infectious disease
characterized by cough, fever, and fatigue and 20% of cases will develop into severe …

Several comorbidities have been shown to be associated with coronavirus disease 2019
(COVID-19) related severity and mortality. However, considerable variation in the …

Currently, the number of patients with coronavirus disease 2019 (COVID-19) has increased
rapidly, but relationship between comorbidity and patients with COVID-19 still not clear. The …

Background An outbreak of coronavirus disease 2019 (COVID-19) occurred in Wuhan,
China; the epidemic is more widespread than initially estimated, with cases now confirmed …

Purpose The main purpose of this study was to examine the overall distribution of chronic
comorbidities in coronavirus disease-19 (COVID-19) infected populations and the risk of the …

ABSTRACT SARS-CoV-2 has caused a worldwide pandemic that began with an outbreak of
pneumonia cases in the Hubei province of China. Knowledge of those most at risk is integral …

Background Mortality rates of coronavirus disease-2019 (COVID-19) continue to rise across
the world. The impact of several risk factors on coronavirus mortality has been previously …

Abstract Background Coronavirus disease 2019 (COVID-19) is associated with a high
mortality rate, especially in patients with severe illness. We conducted a systematic review …