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Indoor Air. 2017 Mar;27(2):311-319. doi: 10.1111/ina.12304. Epub 2016 May 27.

Indoor mold levels and current asthma among school-aged children in Saskatchewan, Canada.

Author information

1
Canadian Centre for Health and Safety in Agriculture, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
2
Department of Medicine, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
3
Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, SK, Canada.
4
School of Public Health, University of Alberta, Edmonton, AB, Canada.
5
College of Nursing, University of Saskatchewan, Saskatoon, SK, Canada.

Abstract

Current knowledge regarding the association between indoor mold exposures and asthma is still limited. The objective of this case-control study was to investigate the relationship between objectively measured indoor mold levels and current asthma among school-aged children. Parents completed a questionnaire survey of health history and home environmental conditions. Asthma cases had a history of doctor-diagnosed asthma or current wheeze without a cold in the past 12 months. Controls were age- and sex-matched to cases. Vacuumed dust samples were collected from the child's indoor play area and mattress. Samples were assessed for mold levels and quantified in colony-forming units (CFU). Sensitization to mold allergens was also determined by skin testing. Being a case was associated with family history of asthma, pet ownership, and mold allergy. Mold levels (CFU/m2 ) in the dust samples of children's mattress and play area floors were moderately correlated (r = 0.56; P < 0.05). High mold levels (≥30 000 CFU/m2 ) in dust samples from play [adjusted odds ratio (aOR) = 2.6; 95% CI: 1.03-6.43] and mattress (aOR) = 3.0; 95% CI: 1.11-8.00) areas were significantly associated with current asthma. In this study high levels of mold are a risk factor for asthma in children.

KEYWORDS:

Asthma; Atopy; Case-control study; Children; Fungal loads; Mold

PMID:
27108895
DOI:
10.1111/ina.12304
[Indexed for MEDLINE]

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