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Correspondence
Risk of COVID-19 and smoking
  1. Ivan Berlin1,2
  1. 1 Department of Pharmacology, Hôpital Pitié-Salpêtrière-Sorbonne Université, Paris, France
  2. 2 Centre Universitaire de Médecine Générale et Santé Publique, UNISANTE, Université de Lausanne Faculté de Biologie et Médecine, Lausanne, Switzerland
  1. Correspondence to Dr Ivan Berlin, Department of pharmacology, Hôpital Pitié-Salpêtrière-Sorbonne Université, Paris 75013, France; ivan.berlin{at}aphp.fr

https://doi.org/10.1136/heartjnl-2020-318311

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    To the Editor

    According to several reports, peer-reviewed or in preprint servers, smokers are under-represented among individuals tested positive (reverse transcription (RT)-PCR) for SARS-CoV-2 and diagnosed with COVID-19. Hippisley-Cox et al 1 also report a markedly reduced prevalence of light, moderate and heavy smokers among those tested positive for SARS-CoV-2 or admitted to an intensive care unit, findings similar to those reported by de Lusignan et al.2 The association does not seem to be dose-dependent/exposure-dependent,1 unlike the usually dose-dependent/exposure-dependent smoking–health disorder associations. These findings led to the hypothesis that, …

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    Footnotes

    • Contributors IB is the sole author of this letter.

    • Funding The author has not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

    • Competing interests None declared.

    • Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

    • Patient consent for publication Not required.

    • Provenance and peer review Commissioned; internally peer reviewed.

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