Lagged Effects of Exposure to Air Pollutants on the Risk of Pulmonary Tuberculosis in a Highly Polluted Region

Int J Environ Res Public Health. 2022 May 9;19(9):5752. doi: 10.3390/ijerph19095752.

Abstract

Background: Although significant correlations have been observed between air pollutants and the development of pulmonary tuberculosis (PTB) in many developed countries, data are scarce for developing and highly polluted regions.

Method: A combined Poisson generalized linear regression-distributed lag nonlinear model was used to determine the associations between long-term exposure (2005-2017) to air pollutants and the risk of PTB in the Beijing-Tianjin-Hebei region.

Results: The monthly PTB cases exhibited a fluctuating downward trend. For each 10 μg/m3 increase in concentration, the maximum lag-specific risk and cumulative relative risk (RR) were 1.011 (95% confidence interval (CI): 1.0091.012, lag: 3 months) and 1.042 (1.036-1.048, 5 months) for PM2.5, and 1.023 (1.015-1.031, 0 months) and 1.041 (1.026-1.055, 2 months) for NO2. The risk of PTB was negatively correlated with O3 exposure, and the minimum lag-specific risk and cumulative RR were 0.991 (95% CI: 0.987-0.994, lag: 0 months) and 0.974 (0.968-0.981, 4 months), respectively. No age-dependent effects were observed.

Conclusions: Our results revealed potential associations between outdoor exposure to PM2.5, NO2, and O3 and the risk of PTB. Further research should explore the corresponding interactions and potential mechanisms.

Keywords: air pollution; epidemic characteristics; pulmonary tuberculosis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Air Pollutants* / analysis
  • Air Pollutants* / toxicity
  • Air Pollution* / adverse effects
  • Air Pollution* / analysis
  • China
  • Environmental Exposure / adverse effects
  • Environmental Exposure / analysis
  • Humans
  • Nitrogen Dioxide
  • Particulate Matter / analysis
  • Tuberculosis, Pulmonary* / epidemiology

Substances

  • Air Pollutants
  • Particulate Matter
  • Nitrogen Dioxide

Grants and funding

This work was supported by the National Science and Technology Major Project (grant numbers 2017ZX10201302), and the National Natural Science Foundation of China (grant numbers 41771434, 41531179).