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Background <p>Cigarette smoking has been reported to be associated with SARS-CoV-2 negative conversion, while little is known about the effect of its dual use with e-cigarettes. This study aimed to investigate whether tobacco product use patterns including e-cigarette use were linked with delayed negative conversion of SARS-CoV-2.</p> Methods <p>An online national survey was conducted from January 28 through February 21, 2023, targeting a community-based population in mainland of China after peak waves of the coronavirus disease 2019 (COVID-19). Participants were followed from the onset of COVID-19 symptoms until the negative conversion day or the day of answering the questionnaire as the endpoint of the study. Multi-variable adjusted Cox proportional hazard models were used to compare the negative conversion time of SARS-CoV-2 across different cigarette and e-cigarette use patterns.</p> Results <p>A total of 66,537 participants infected with COVID-19 were enrolled and 13,294 were included in the analyses. During the median duration of 7 days (interquartile range 5 to 10 days), a total of 11,587 (87.2%) had a negative conversion. Compared with never users, current exclusive smokers (multi-variable adjusted HR 0.59, 95% CI 0.48–0.71), current dual users (HR 0.31, 95% CI 0.22–0.44), and previous smokers (HR 0.56, 95% CI 0.37–0.83) took longer to turn negative after 10 days of follow-up.</p> Conclusions <p>Both current exclusive cigarette use and dual use of cigarettes and e-cigarettes were associated with the delayed negative conversion of SARS-CoV-2, which strengthens the importance of smoking and vaping cessation messaging and community-based tobacco control strategies during pandemics like COVID-19 next time.</p>

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Estimating the association between cigarette and e-cigarette use patterns and SARS-CoV-2 negative conversion time: retrospective online survey in China

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月3日

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  • Ying Xie,
  • Yinghua Li,
  • Zheng Su,
  • Xueyan Han,
  • Zhao Liu,
  • Zhenxiao Huang,
  • Anqi Cheng,
  • Xinmei Zhou,
  • Jinxuan Li,
  • Rui Qin,
  • Xiaowen Wei,
  • Yi Liu,
  • Xin Xia,
  • Qingqing Song,
  • Liang Zhao,
  • Kian Fan Chung,
  • Dan Xiao,
  • Chen Wang

摘要

Background

Cigarette smoking has been reported to be associated with SARS-CoV-2 negative conversion, while little is known about the effect of its dual use with e-cigarettes. This study aimed to investigate whether tobacco product use patterns including e-cigarette use were linked with delayed negative conversion of SARS-CoV-2.

Methods

An online national survey was conducted from January 28 through February 21, 2023, targeting a community-based population in mainland of China after peak waves of the coronavirus disease 2019 (COVID-19). Participants were followed from the onset of COVID-19 symptoms until the negative conversion day or the day of answering the questionnaire as the endpoint of the study. Multi-variable adjusted Cox proportional hazard models were used to compare the negative conversion time of SARS-CoV-2 across different cigarette and e-cigarette use patterns.

Results

A total of 66,537 participants infected with COVID-19 were enrolled and 13,294 were included in the analyses. During the median duration of 7 days (interquartile range 5 to 10 days), a total of 11,587 (87.2%) had a negative conversion. Compared with never users, current exclusive smokers (multi-variable adjusted HR 0.59, 95% CI 0.48–0.71), current dual users (HR 0.31, 95% CI 0.22–0.44), and previous smokers (HR 0.56, 95% CI 0.37–0.83) took longer to turn negative after 10 days of follow-up.

Conclusions

Both current exclusive cigarette use and dual use of cigarettes and e-cigarettes were associated with the delayed negative conversion of SARS-CoV-2, which strengthens the importance of smoking and vaping cessation messaging and community-based tobacco control strategies during pandemics like COVID-19 next time.