Background: The purpose of this study was to examine the prevalence and effects of current
smoking on adverse outcomes among hospitalized COVID-19 patients. Methods: A …

As the world faces the coronavirus disease 2019 (COVID-19) pandemic due to severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, concerns have been raised …

Brazil is, at the time of writing, the global epicenter of COVID-19, but information on risk
factors for hospitalization and mortality in the country is still limited. Demographic and …

The newly described severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is
responsible for a pandemic (coronavirus disease 2019 [COVID-19]). It is now well …

Background The pandemic of coronavirus disease 2019 (COVID‐19) caused by severe
acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) infection has made widespread …

As a highly contagious respiratory disease, COVID-19 has yielded high mortality rates since
its emergence in December 2019. As the number of COVID-19 cases soars in epicenters …

The novel SARS-CoV-2 (COVID-19) became a pandemic on 11 March 2020. The
epidemiological picture is constantly evolving, and on 13 May, 4,170,424 cases and …

Background: There is a compelling need to identify clinical and laboratory predictors of
unfavorable clinical course and death in patients with coronavirus disease (COVID-19). A …

Evidence is mounting to indicate that cancer patients may have more likelihood of having
coronavirus disease 2019 (COVID‐19) but lack consistency. A robust estimate is urgently …

Simple Summary The coronavirus disease 2019 (COVID-19) pandemic caused by the
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a major global …