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Occurrence of moulds in modern living and working environments
Abstract:
The occurrence of saprophytic moulds in indoor environments and their potential hazards to human health are discussed. In addition to mesophilic species, xerophilic moulds appear to be common, often developing together with mites. Allergic and non-allergic symptoms are reported when patients are exposed to moulds in homes, schools and working places. Air-conditioning systems are consistently involved with mould development. Complaints of eye-, nose- and throat-irritation as well as fatigue seem to be correlated with unpleasant odours produced by abundant mould growth, but the relationship between the symptoms and the odours is not understood. The role of air-borne mycotoxins is discussed. Methods to detect moulds in indoor environments are described. Because no single method or cultivation medium is sufficient to detect all the various indoor moulds, a combination of air sampling, direct microscopic examination and cultivation on both standard and low water activity media is recommended.
Insights
Indoor moulds, including xerophilic species, pose health risks and trigger symptoms. Air-conditioning systems can promote mould growth, but the link between mould odors and health issues requires further study.
Area of Science:
- Environmental Science
- Mycology
- Public Health
Background:
- Saprophytic moulds are prevalent in indoor environments, posing potential health hazards.
- Both mesophilic and xerophilic mould species are common, often co-occurring with mites.
- Exposure to indoor moulds in homes, schools, and workplaces can lead to allergic and non-allergic symptoms.
Purpose of the Study:
- To discuss the occurrence and health implications of indoor moulds.
- To explore the role of air-conditioning systems in mould development.
- To review methods for detecting indoor moulds and discuss airborne mycotoxins.
Main Methods:
- Review of existing literature on indoor moulds and their health effects.
- Discussion of methods for mould detection, including air sampling and microscopy.
- Emphasis on using a combination of cultivation media to identify diverse mould species.
Main Results:
- Moulds, particularly xerophilic types, are frequently found indoors, sometimes with mites.
- Symptoms like eye, nose, and throat irritation, and fatigue are reported, potentially linked to mould odors, though the relationship is unclear.
- Air-conditioning systems are frequently implicated in indoor mould proliferation.
Conclusions:
- Comprehensive methods combining air sampling, direct microscopic examination, and cultivation on various media are necessary for accurate indoor mould detection.
- Further research is needed to understand the relationship between mould-produced odors and associated health symptoms.
- Managing indoor mould requires understanding its occurrence, detection, and potential health impacts.