Current smoking and COVID-19 risk: results from a population symptom app in over 2.4 million people

Data from UK Zoe COVID-19 Symptom Study app (24 Mar to 23 Apr 2020; n=2,401,982; smoking prevalence 11.0%) suggest smokers more likely to report symptoms of COVID-19 (OR 1.14; 95% CI, 1.10 -1.18), consistent with smoker being at increased risk of developing symptomatic COVID-19.

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Thorax