AI Article Synopsis
- The study examined how indoor air pollution in Child Day Care Centers (DCCs) affects respiratory issues in kids under 6.
- Air quality was measured seasonally, focusing on pollutants like PM₁₀, CO, and benzene, while symptoms like coughing and rhinitis were reported by parents and teachers.
- Results showed a strong correlation between high pollution levels and respiratory symptoms, indicating significant air quality issues in DCCs in Bangkok.
Article Abstract
Background: This study aimed to assess the association between exposure to indoor air pollution in DCCs (Child Day Care Centers) and the respiratory symptoms of children under 6 years old.
Methods: Air quality data were collected three times regarding to seasonal variation. Pollutants measured in 11 DCCs included PM₁₀, CO, NO₂, SO₂, O₃, benzene, bacteria, fungi, and dust mite. The frequencyof respiratory symptoms including coughing, rhinitis, and dyspnea were recorded via teacher and parent-report questionnaires. Fractional exhaled nitric oxide (FENO) levels were measured to assess airway inflammation.
Results: 436 children participated in the study. 83% completed data collection in all 3 seasons. The frequency of rhinitis correlated with PM₁₀ (IRR=70.3, 95%CI=12.4-399.7, p<0.001), CO (IRR=3.2, 95%CI=2.4-4.2, p<0.001), benzene (IRR=2.3, 95%CI=1.8-3.2, p<0.001) and D.Pteronyssinus level (IRR=2.1, 95%CI=1.7-2.7, p<0.001). The frequency of coughingcorrelated with levels of PM10 (IRR=15.2, 95%CI=3.0-78.2, p<0.001), CO (IRR=2.8, 95%CI=2.1-3.7, p<0.001), benzene (IRR=1.4, 95%CI=1.1-1.9, p=0.02). The frequency of dyspnea correlated with D.Pteronyssinus level (IRR=3.9, 95%CI=1.7-9.1, p=0.001). FENO levels associated with high benzene levels (OR=5.9, 95%CI=1.5-22.9, p=0.01). The majority of DCCs had at least one PM₁₀ measurement above the standard level, and these high levels were noted in all 3 seasons. Three DCCs had PM₁₀ levels above the standard level in all seasons. 64% of the DCCs had indoor bacterial counts above the standard level in all seasons.
Conclusions: PM₁₀ and bacterial count is a significant problem in Bangkok metropolitan DCCs. The respiratory symptoms of children positively associated with PM₁₀, CO, benzene and dust mite levels.
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| http://dx.doi.org/10.12932/AP0838 | DOI Listing |
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