Short-term exposure to gaseous air pollutants and daily hospitalizations for acute upper and lower respiratory infections among children from 25 cities in China

• Published in: Environmental research 2022-09, Vol.212 (Pt D), p.113493-113493, Article 113493
• Main Authors: Xu, Hui, Wang, Xinyu, Tian, Yaohua, Tian, Jian, Zeng, Yueping, Guo, Yongli, Song, Fei, Xu, Xin, Ni, Xin, Feng, Guoshuang
• Format: Article
• Language: English
• Subjects: Gaseous air pollutants; Hospitalization; Multi-city time-series study; Pediatric respiratory disease
• ISSN: 0013-9351; 1096-0953
• DOI: 10.1016/j.envres.2022.113493

To examine the short-term association between gaseous air pollutants (CO, NO2, SO2, and O3) and all-cause respiratory disease, acute upper respiratory infections (AURIs) as well as acute lower respiratory infections (ALRIs) among children, we conducted the study from 25 major cities in China. Hospitalization records of children aged 0–18 years due to all-cause respiratory diseases (889,926), AURIs (97,858), and ALRIs (642,154) from 2016 to 2019 were extracted. Concentrations of CO, NO2, SO2, and O3 were averaged across monitoring stations. Generalized additive models were used to estimate the associations between gaseous air pollutants and daily hospitalizations for all-cause respiratory disease, AURIs, and ALRIs. The meta-analysis was used to combine the city-specific estimates. A 10 mg/m3 increase in CO at lag01, and a 10 μg/m3 increase in NO2, SO2, and O3 at lag01 were associated with 1.65% (95%CI, 0.41–2.91), 0.54% (95%CI, 0.30–0.79), 0.60% (95%CI, 0.22–0.99), and 0.23% (95%CI, 0.06–0.39) increase of hospitalizations due to all-cause respiratory disease, respectively. For the disease subtype, O3 only had adverse effects on AURIs, CO and SO2 mainly on ALRIs, and NO2 on both AURIs and ALRIs. Children aged 4–6years were more vulnerable to the effects of CO and NO2, but those aged