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  • The VCAPS team

A systematic review on smoking and COVID-19 linkage

The global pandemic of COVID-19 is still unfortunately under progression. However, information on how this threat affects patients with what clinical characteristics is still too soon to be released. While smoking is assumed as one of the possibilities to associate with negative lung health and respiratory disease, there are limited evidence on how COVID-19 would affect smoking people. A systematic review of the evidence of COVID-19 on smokers is published on Tobacco Induced Disease on March, 20th, 2020 trying to appraise this .

The article suggest that smokers are twice more likely than non-smokers to contract influenza and have more severe symptoms, while smokers were also noted to have higher mortality rate in the previous MERS-CoV outbreak. Remarkably, based on 5 studies that reported data on the smoking status of patients infected with COVID-19, smokers are at higher risk of having severe symptoms, and admitted to an ICU compared to non-smoker at 1.4 and 2.4 times respectively.

The article also indicated the limitation of data sources at early stage of COVID-19.

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