Disclosure Statement: None of the authors has a financial relationship with a commercial entity that has an interest in the subject of the manuscript.
Characterization of allergens and airborne fungi in low and middle-income homes of primary school children in Durban, South Africa†
Version of Record online: 5 JUN 2012
Copyright © 2012 Wiley Periodicals, Inc.
American Journal of Industrial Medicine
Special Issue: Research Contributions from the United States International Training and Research in Environmental and Occupational Health Program: Part 1
Volume 55, Issue 12, pages 1110–1121, December 2012
How to Cite
Jafta, N., Batterman, S. A., Gqaleni, N., Naidoo, R. N. and Robins, T. G. (2012), Characterization of allergens and airborne fungi in low and middle-income homes of primary school children in Durban, South Africa. Am. J. Ind. Med., 55: 1110–1121. doi: 10.1002/ajim.22081
- Issue online: 7 NOV 2012
- Version of Record online: 5 JUN 2012
- Manuscript Accepted: 15 MAY 2012
- EThekwini Municipality, KwaZulu Natal, Durban, South Africa. Grant Number: 1a-103—Health Study
- US NIH Fogarty International Center. Grant Number: 2 D43 TW000812
- home characteristics;
- indoor air pollution;
The South Durban Health Study (SDHS) is a population-based study that examined the relationship between exposure to ambient air pollutants and respiratory disease among school children with high prevalence of asthma who resided in two purposely selected communities in north and south Durban, KwaZulu-Natal, South Africa.
From the SDHS participants, a subgroup of 135 families was selected for investigation of household characteristics potentially related to respiratory health. In these households, a walkthrough investigation was conducted, and settled dust and air samples were collected for allergen and fungal measurements using standardized techniques.
Asp f1 allergen was detected in all homes, and Bla g1 allergen was detected in half of the homes. House dust allergens, Der f1 and Der p1 exceeded concentrations associated with risk of sensitization and exacerbation of asthma in 3% and 13%, respectively, of the sampled homes, while Bla g1 exceeded guidance values in 13% of the homes. Although airborne fungal concentrations in sleep areas and indoors were lower than outdoor concentrations, they exceeded 1,000 CFU/m3 in 29% of the homes. Multivariate analyses identified several home characteristics that were predictors of airborne fungal concentrations, including moisture, ventilation, floor type, and bedding type. Airborne fungal concentrations were similar indoors and outdoors, which likely reduced the significance of housing and indoor factors as determinants of indoor concentrations.
Allergen concentrations were highly variable in homes, and a portion of the variability can be attributed to easily recognized conditions. Am. J. Ind. Med. 55:1110–1121, 2012. © 2012 Wiley Periodicals, Inc.