Scholarlink

<p>The risk of cross-infection arises primarily from close contact between individuals, where the dynamic interaction of their breathing patterns plays a critical role in the transmission and reception of respiratory pathogens. However, the influence of the susceptible individual’s breathing mode and its synchronization with an infected person’s respiratory activity has been largely overlooked. This study investigates how different breathing modes (mouth or nose breathing) affect the transmission of SARS-CoV-2, used here as a representative virus, during cough exposure. Coughed droplets ranging from 1 to 100 μm in diameter were tracked using a rigorously validated computational fluid dynamics (CFD) model. The infection risk was quantified using a modified Wells-Riley model. Results reveal that breathing mode significantly influences droplet transport and infection outcomes: mouth exhalation leads to a lower infection risk of 1.38%, compared to 1.71% for nose exhalation, due to its stronger exhaled airflow deflecting incoming contaminated droplets. These findings underscore the importance of considering individual respiratory patterns when assessing exposure risk in close-contact scenarios and can inform more effective infection control strategies.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of breathing modes on respiratory pathogen transmission during cough exposure

  • 期刊论文

  • 发表日期：

    2025年9月16日

查看全文
  • Ihab Hasan Hatif,
  • Keng Yinn Wong,
  • Huiyi Tan,
  • Hong Yee Kek,
  • Sheikh Ahmad Zaki,
  • Haslinda Mohamed Kamar

摘要

The risk of cross-infection arises primarily from close contact between individuals, where the dynamic interaction of their breathing patterns plays a critical role in the transmission and reception of respiratory pathogens. However, the influence of the susceptible individual’s breathing mode and its synchronization with an infected person’s respiratory activity has been largely overlooked. This study investigates how different breathing modes (mouth or nose breathing) affect the transmission of SARS-CoV-2, used here as a representative virus, during cough exposure. Coughed droplets ranging from 1 to 100 μm in diameter were tracked using a rigorously validated computational fluid dynamics (CFD) model. The infection risk was quantified using a modified Wells-Riley model. Results reveal that breathing mode significantly influences droplet transport and infection outcomes: mouth exhalation leads to a lower infection risk of 1.38%, compared to 1.71% for nose exhalation, due to its stronger exhaled airflow deflecting incoming contaminated droplets. These findings underscore the importance of considering individual respiratory patterns when assessing exposure risk in close-contact scenarios and can inform more effective infection control strategies.