Cited by 173Indoor Air Quality and Microbial ExposureAsthma and respiratory diseasesOccupational exposure and asthma

Quantification of airborne moulds in the homes of children with and without wheeze.

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Strachan, D P, Flannigan, B, McCabe, E M, McGarry, F·1990·Thorax

Abstract

A population survey of 1000 7 year old children found a significant excess of wheeze among children whose homes were reported to be mouldy (odds ratio 3.70, 95% confidence limits 2.22, 6.15). The airborne mould flora was quantified by repeated volumetric sampling during the winter in three rooms of the homes of 88 children. All of these had previously completed spirometric tests before and after a six minute free running exercise challenge. Total airborne mould counts varied from 0 to 41,000 colony forming units (CFU)/m3, but were generally in the range 50-1500 CFU/m3, much lower than the concentrations found outdoors in summer. The principal types of fungi identified are all known to be common out of doors, and most were found on at least one occasion in most of the homes. Median and geometric mean total mould counts were not related to reports of visible mould in the home, or to a history of wheeze in the index child. The heterogeneous group of non-sporing fungi (mycelia sterilia) were the only airborne fungi present at significantly higher concentrations in the homes of wheezy children (geometric mean 2.1 v 0.7 CFU/m3. A non-significant increase in total mould counts was observed in the homes of children with a 10% or greater decline in FEV1 after exercise (geometric mean 354 v 253 CFU/m3). Questionnaire reports of mould in the home may be a poor indicator of exposure to airborne spores. The total burden of inhaled mould spores from indoor sources is probably not an important determinant of wheeze among children in the general population. Although the association with mycelia sterilia could be a chance finding, these non-sporing isolates may include a potent source of allergen.

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Research works printed but not linked: 5

  1. Strachan DP. Damp housing and childhood asthma: valida- tion ofreporting ofsymptoms. Br MedJ 1988;297:1223-6.
  2. Stevens RB. Mycology guidebook. Seattle: University of Washington Press, 1974.
  3. SAS Institute. SAS user'sguide. Basics; Statistics. Version 5 edition of both volumes. Cary, North Carolina: SAS Institute, 1985.
  4. Adams KF, Hyde WA. Pollen grains and fungus spores 386 on July 30, 2023 by guest. Protected by copyright. http://thorax.bmj.com/ Thorax: first published as 10.1136/thx.45.5.382 on 1 May 1990. Downloaded from Quantification of airborne moulds in the homes of children with and without wheeze indoors and out at Cardiff. Journal of Palynology 1965;1: 67-9.
  5. Holmberg K. Mould growth inside buildings. In: Berglund B, Lindvall T, Sundell J, eds. Indoor air. Proceedings of the third international conference on indoor air quality and climate. Vol 3. Sensory and hyperreactivity reactions to sick buildings. Stockholm: Swedish Council for Building Research, 1984:71-7.

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Authors
Strachan, D. P., Flannigan, B., McCabe, E. M., & McGarry, F.
Affiliations
London School of Hygiene & Tropical Medicine (GB)
Venue
Thorax
Publisher
BMJ
Published
1990-05-01
Volume
45
Issue
5
Pages
382-387
ISSN
0040-6376 (ISSN-L)
OpenAlex
W2068002038
Cited by
173
References
21
Citations by year
2024: 1 · 2023: 3 · 2022: 1 · 2021: 1 · 2020: 1 · 2017: 1 · 2016: 2 · 2015: 8 · 2014: 4 · 2013: 5 · 2012: 11
FWCI
4.14
Type
journal article
Language
en
Open access
Locations
  • Thorax (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Occupational exposure and asthma
Keywords
airborne mold, childhood wheezing, indoor air quality, mold exposure, Mycelia sterilia, mold spores, exercise-induced bronchoconstriction, FEV1 decline, family environment, allergens
MeSH terms
Bronchi, Child, Environmental Exposure, Housing, Humans, Respiratory Hypersensitivity, Respiratory Sounds, Spores, Fungal

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