Household airborne endotoxin associated with asthma and allergy in elementary school-age children: a case–control study in Kaohsiung, Taiwan
2020
Yen, Yu-Chuan | Yang, Chun-Yuh | Wang, Tsu-Nai | Yen, Pei-Chun | Ho, Chi-Kung | Mena, Kristina D. | Lee, Tzu-Chi | Chen, Kang-Shin | Lin, Yuan-Chung | Chen, Pei-Shih
To evaluate the association between the presence of asthma and allergy, and airborne endotoxin in homes of school-age children in Kaohsiung City, Taiwan, with a case–control study design by matching the age and class exposure. Data collection of home visits included an interviewer-administered questionnaire and air sampling of participants’ homes for endotoxin, bacteria, and fungi, as well as temperature and relative humidity measurements. Endotoxin was detected in all air samples with a median value of 0.67 EU m⁻³. In the adjusted logistic regression model, household airborne endotoxin was associated with higher prevalence of asthma and allergy; OR = 4.88 (95% CI 1.16–20.55) for Q3 (between 0.67 and 1.97 EU m ⁻³) vs. Q1 (< 0.31 EU m ⁻³), with statistical significance. Airborne fungi were associated with higher prevalence of asthma and allergy; OR = 4.47 (95% CI 1.13–17.69) for Q3 (between 314 and 699 CFU m ⁻³) vs. Q1 (< 159 CFU m ⁻³) in adjusted logistic regression models. Airborne endotoxin and fungi were significantly associated with children’s asthma and allergy.
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