Short-term and long-term effects of PM2.5 on acute nasopharyngitis in 10 communities of Guangdong, China

Lingli Zhang, Yin Yang, Yanhong Li, Zhengmin (Min) Qian, Wanli Xiao, Xiaojie Wang, Craig A. Rolling, Echu Liu, Jianpeng Xiao, Weilin Zeng, Tao Liu, Xing Li, Zhenjiang Yao, Hao Wang, Wenjun Ma, Hualiang Lin

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Objectives: We aimed to assess the effects of short-term and long-term exposure to ambient fine particle matter (PM2.5) on acute nasopharyngitis. Methods: A total of 9468 participants aged 18 years and above were recruited from 10 communities in four cities of Guangdong, China during the baseline survey in 2014, and they were followed-up from January 2015 to December 2016. Air pollution exposure was assessed based on the daily concentrations (short-term) and annual concentrations (long-term) of the nearby air monitoring station and the survey date. A mixed-effect logistic model and Cox proportional hazards model were used to quantify the short-term and long-term associations after adjustment for potential confounding factors. Results: Significantly positive associations were found between both short-term and long-term exposures of PM2.5 and acute nasopharyngitis. The adjusted odds ratio was 1.15 (95% CI: 1.07, 1.23) for each 10 μg/m3 increase in daily PM2.5 at lag2 day (short-term effects), and the hazard risk was 1.18 (95% CI: 1.10, 1.25) for each 10 μg/m3 increase in annual PM2.5 (long-term effects). Stronger associations between short-term PM2.5 exposure and acute nasopharyngitis were observed among men (OR = 1.10; 95% CI: 1.04, 1.17) and participants aged above 65 years (OR = 1.13; 95% CI: 1.04, 1.23) in the stratified analyses. No significant association was found in women (OR = 1.00; 95% CI: 0.92, 1.10) or young participants ≤65 years (OR = 0.96; 95% CI: 0.88, 1.04). However, for the long-term exposure, the hazard risk was higher for participants younger than 65 years (OR = 1.22; 95% CI: 1.12, 1.32) than the older group (OR = 1.11; 95% CI: 1.00, 1.24). Conclusion: This study indicates that both short-term and long-term exposures to higher concentrations of PM2.5 could increase the risk of acute nasopharyngitis.

Original languageEnglish (US)
Pages (from-to)136-142
Number of pages7
JournalScience of the Total Environment
StatePublished - Oct 20 2019

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution


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