Since several years, outbreaks of wood decay fungi in homes are increased. Among this variety of fungi, Serpula lacrymans is considered as the most serious species because it causes severe damage in the built environment. Its mycelium can spread extensively on timber and other building materials, and fruiting bodies can grow and produce rusty red basidiospores (Fig.1). Although asthma due to the spores has been previously established, little is known about residents’ exposure and potential health risks. To investigate the characteristics of this fungal contamination, bioaerosols were collected with the Coriolis μ from 40 rooms located in damaged houses.
A total of 40 air samples were collected by Coriolis μ (Fig.2). Serpula lacrymans was detected in 12 samples. Other ligninolytic fungi were also identified from bioaerosols: Donkioporia expansa and Serpula himantioides, respectively in 7 and 1 samples. These results showed that several wood rotting species could be observed in damaged buildings.
The project Mycoaerotox was supported by a grant from the Ministère de l’Ecologie, du Développement Durable, des Transports et du Logement (MEDDTL and ADEME, program Primequal).