To examine the role of fungi in the production of sick building syndrome.
Methods-A 22 month study in the United States of 48 schools (in which there had been concerns about health and indoor air quality (IAQ)). Building indoor air and surface samples, as well as outdoor air samples were taken at all sites to look for the presence of fungi or their viable propagules.
Five fungal genera were consistently found in the outdoor air and comprised over 95% of the outdoor fungi.
These genera were Cladosporium (81.5%), Penicillium (5.2%), Chrysosporium (4.9%), Alternaria (2.8%), and Aspergillus (1.1%). At 20 schools, there were significantly more colony forming units per cubic metre (CFU/m3) (p<0.0001) of propagules of Penicillium species in the air samples from complaint areas when compared with the outdoor air samples and the indoor air samples from non-complaint areas.
At five schools, there were more, although not significant (p=0.10), Penicillium propagules in the air samples from complaint areas when compared with the outdoor air samples and the indoor air samples from non-complaint areas.
In 11 schools, the indoor air (complaint areas) fungal ratios were similar to that in the outdoor air.
In these 11 schools Stachybotrys atra was isolated from swab samples of visible growth under wetted carpets, on wetted walls, or behind vinyl wall coverings. (...)
Mots-clés Pascal : Pollution intérieur, Etats Unis, Amérique du Nord, Amérique, Ecole, Bâtiment malsain syndrome, Fungi, Thallophyta, Teneur air ambiant, Penicillium, Fungi Imperfecti, Stachybotrys, Spore, Contamination
Mots-clés Pascal anglais : Indoor pollution, United States, North America, America, School, Sick building syndrome, Fungi, Thallophyta, Ambient air concentration, Penicillium, Fungi Imperfecti, Stachybotrys, Spores, Contamination
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0438631
Code Inist : 002B30A02B. Création : 25/01/1999.