Cent Eur J Public Health 2015, 23(1):73-76
Spatiotemporal Analysis of Ambient Air Pollution Exposure and Respiratory Infections Cases in Beijing
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
Background: Ambient air pollutants (PM2.5) are components of persistent haze in Beijing during the autumn and winter seasons.
Materials: We collected hourly PM2.5 monitoring data for 35 days from 35 sites in Beijing during 2012. We also identified patients developing respiratory infections during the same time period in the same locale. A BME model was used to simulate environmental exposure concentrations over the course of each day. A medical accessibility analysis was performed to exclude the impact of medical availability on the analysis. A spatial analysis was included in the evaluation of the relationship between exposure duration and concentration of PM2.5 with the development of acute respiratory disease.
Results: A low concentration of PM2.5 (greater than 35 µg/m3 and less than 115 µg/m3) for at least 3 days was associated with an increased risk of acute respiratory disease. A high concentration of PM2.5 (greater than 115 µg/m3) was associated with an increased risk of infection even after 1 day of exposure.
Keywords: PM2.5, respiratory infection cases, exposure duration and concentration, cumulative effect, spatiotemporal analysis
Received: January 6, 2015; Revised: March 10, 2015; Accepted: March 10, 2015; Published: March 1, 2015 Show citation
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