Smoking and COVID-19

Added April 4, 2020

Citation: Vardavas CI, Nikitara K. COVID-19 and smoking: A systematic review of the evidence. Tobacco Induced Diseases 2020; 18: 20

What is this? Smokers are more vulnerable to infectious diseases and smoking can severely affect the prognosis of people with respiratory diseases. It is important to know the relevance of this to COVID-19.

In this systematic review, the authors searched for studies examining the association between smoking and health outcomes related to COVID-19. They restricted their search to studies in the English language published between 2019 and 2020 and did the search on 17 March 2020. They identified 5 studies (1549 participants). All 5 studies were done in China.

What was found: People with COVID-19 who were current or previous smokers were more likely than COVID-19 patients who did not smoke to be admitted to an intensive care unit and to receive  mechanical ventilation, and more likely to die from the COVID-19.

What’s uncertain: Factors other than smoking that may have an impact on the health of patients with COVID-19 were not studied in this review.


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