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[Environmental audits in Ile-de-France]
V Bex1, A Mouilleseaux, L Bordenave
1Laboratoire d'Hygiène de la Ville de Paris.
Abstract:
Mould exposure in indoor environments can cause various health effects: infections, allergies, toxic effects and irritations. We have lead environmental audits (n = 32), at physician's request, in suspected mould allergic patient homes. A deep home visit allows the detection of potential indoor fungal and humidity sources, afterwards, a sample strategy is determinate. Results show that indoor airborne spores concentrations vary from some units (CFU) to more than thousands per m3. In dust samples, the number of spores per gram ranges from hundred to millions. A statistical analysis shows that "mouldy dwellings" are more contaminated than "non mouldy" ones and than outdoor air. Mould species relative presence is specific in each contaminated home, depending on various factors (mouldy support nature, competition between species...).
Insights
Indoor mold exposure poses health risks. Environmental audits reveal significantly higher indoor mold spore concentrations in "mouldy dwellings" compared to non-mouldy homes and outdoor air.
Area of Science:
- Environmental Science
- Mycology
- Public Health
Context:
- Indoor environments can harbor mold, leading to health issues like allergies and infections.
- Physician-referred environmental audits (n=32) were conducted in homes of patients with suspected mold allergies.
- Home visits identified potential indoor fungal and humidity sources for targeted sampling.
Purpose:
- To investigate and quantify indoor mold spore concentrations in homes with suspected mold-related health issues.
- To compare indoor mold levels with outdoor air and identify factors influencing species presence.
Summary:
- Indoor airborne spore concentrations ranged from units to thousands of Colony Forming Units (CFU) per cubic meter.
- Dust samples showed spore counts from hundreds to millions per gram.
- Statistical analysis confirmed "mouldy dwellings" exhibit higher contamination than "non mouldy" ones and ambient outdoor air.
- The relative presence of mold species was unique to each contaminated home, influenced by factors like substrate and interspecies competition.
Impact:
- Highlights the significant indoor mold contamination in affected homes.
- Provides data supporting the link between indoor mold and potential health risks.
- Informs environmental health strategies for managing indoor fungal exposures.
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