大气污染物及气象因子与儿童呼吸道感染的相关性调查

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Abstract Objective: To assess the relationship among the concentrations of different air pollutants and meteorological factors in Wenzhou city and respiratory tract infection in children. Methods: The study was conducted in Wenzhou city, by recording the live air quality data and meteorological factors from January 2015 to December 2015, and collecting the clinic visiting data from the pediatric outpatient and emergency department of the Second Affiliated Hospital & Yuying Children’s Hospital of Wenzhou Medical University. The relationship between air pollutants concentrations and meteorological factors and the clinic visit volume caused by respiratory infection were analyzed by Pearson correlation statistics and multivariant linear stepwise regression model. Results: The average concentrations of NO2, PM2.5 and PM10 were higher than the national standards of the second level of annual average concentration. The rates of exceed standard of NO2, PM2.5 and PM10 concentration were 16%, 29% and 6% respectively. Their levels were highest in winter. The numbers of days of exceeding standard were more than half a year. Regression analysis revealed that 10 μg/m3 increase of NO2 might result in 2.9%, 9.1%, 2.5% increase of clinic visits due to bronchitis, bronchiolitis and pneumonia. And a 10 μg/m3 increase of PM10 was associated with 2.9% increase of clinic visits caused by upper respiratory tract infection and 1.8% increase of clinic visit volume caused by bronchitis and 2.5% increase of clinic visits due to pneumonia. An increase of 1 ℃ of the daily minimum temperature might result in 1.8%, 2.8%, and 3.3% decrease of clinic visits due to bronchitis, bronchiolitis and pneumonia. Conclusion: In year 2015, the average concentrations of NO2, PM2.5 and PM10 stayed in high level. NO2, PM2.5, PM10 are major air pollutants in Wenzhou city. The increase in level of NO2, PM10 and the decrease of the daily minimum temperature are correlated with the increase of number of respiratory tract infection in children.

Key words： air pollutants respiratory tract infections child

Received: 29 June 2016

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	KONG Ludan
	ZHANG Weixi
	HU Xiaoguang
	ZHANG Songzhen
	LI Changchong.

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https://xb.wmu.edu.cn/EN/ OR https://xb.wmu.edu.cn/EN/Y2017/V47/I4/263

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