Since December 2019 the whole world's focus has been on coronavirus disease 2019
(COVID-19), socially, economically, and especially medically. The pandemic and resulting …

Background: Smoking is considered to be one of the main risk factors that may affect the
severity of coronavirus disease 2019 (COVID-19). Previously, several meta-analyses with a …

METHODS A cross-sectional study was conducted from April to August 2020 using medical
records of 490 COVID-19 patients, including the history of their smoking patterns from 15 …

Methods: articles from MEDLINE and pre-prints published from January to April 2020 were
identified. Results: data from China showed that men had more severe outcomes of COVID …

Background: Few studies have shown that smokers are more likely than nonsmokers to
contract COVID-19, while others report that smokers are underrepresented among those …

Is there any effect of smoking status on severity and mortality of hospitalized patients with
COVID-19 pneumonia? Introduction: The Severe Acute Respiratory Syndrome (SARS-CoV …

Background: Few studies have shown that smokers are more likely than nonsmokers to
contract COVID-19, while some reports indicate that smokers are underrepresented among …

Background: Many studies have discussed the relationship between COVID-19 and
smoking, but they include many contradictory findings. This study evaluates the relationship …

Methods:: This was a retrospective analysis of all adults hospitalized with COVID-19 from
March 09 to May 18, 2020. Results:: 1173 patients met the study criteria. 837 patients never …

Objective: To assess the frequency of smokers in patients who are confirmed to have COVID-
19 through PCR testing and to determine the association of cigarette and windpipe smoking …