The relationship between air quality and respiratory pathogens among children in Suzhou City

Area of Science:

• Environmental Health
• Pediatric Respiratory Medicine
• Epidemiology

Background:

• Air pollution poses a significant threat to public health, especially in urban environments.
• Children, due to their developing respiratory systems, are particularly vulnerable to the adverse effects of air pollutants.
• Respiratory infections are a leading cause of childhood illness and hospitalization.

Purpose of the Study:

• To investigate the short-term effects of ambient air pollutant concentrations on respiratory infections in children of various age groups in Suzhou City.
• To identify specific air pollutants associated with different types of respiratory infections (viral and bacterial) in children.
• To determine the age-specific vulnerability of children to air pollution-induced respiratory infections.

Main Methods:

• Utilized clinical data of children hospitalized with respiratory infections from 2014-2016 at the Children's Hospital of Soochow University.
• Collected concurrent air quality data for Suzhou City, focusing on pollutants like PM2.5, PM10, NO2, SO2, and CO.
• Employed time series models with lagged effects to analyze the relationship between pollutant concentrations and respiratory tract infections, considering causative pathogens.

Main Results:

• Single-pollutant models revealed significant associations between PM2.5, PM10, NO2, SO2, CO, and respiratory infections in children under 3 years, with peak effects at a 3-week lag.
• Multi-pollutant analysis indicated PM2.5 was linked to viral respiratory infections in infants (<7 months) and bacterial infections in older children.
• PM10 concentrations were associated with viral infections in preschool-aged children.

Conclusions:

• PM2.5, PM10, and NO2 are identified as key atmospheric pollutants in Suzhou impacting children's respiratory health.
• The association between air pollutant concentrations and both viral and bacterial respiratory infections is more pronounced in children under 3 years.
• PM2.5 demonstrated the strongest influence on viral and Mycoplasma pneumoniae respiratory infections when considering multiple pollutants simultaneously.