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Lung India Official publication of Indian Chest Society  
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Year : 2021  |  Volume : 38  |  Issue : 7  |  Page : 27-30

COVID-19 and smoking: More severity and death – An experience from Iran

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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/lungindia.lungindia_757_20

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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 requiring hospital treatment for this illness. This study was designed and implemented for investigating the severity and outcome of COVID-19 based on underlying smoking status. Materials and Methods: This was a case–control study that was implemented in Tehran and Ahvaz with all COVID-19 patients from February to July 2020. Patients were divided into two groups of COVID-19 positive (1044 cases) and negative (1231 controls) randomly based on entrance number. Results: The frequency of smokers in the case group is significantly lower than the control group (15.4% vs. 28%). However, the number of days of hospitalization and the use of more than 3 medications in the group of smokers were significantly higher. A comparison between groups of case and control based on smoking indicates that the death rate was significantly higher in smokers with COVID-19. Conclusions: The results of this study showed that although the number of smokers in COVID-19 patients is significantly lower, smokers run an aggresive curse and have higher mortality.

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