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  • Title: Microbial growth in building material samples and occupants' health in severely moisture-damaged homes.
    Author: Järvi K, Hyvärinen A, Täubel M, Karvonen AM, Turunen M, Jalkanen K, Patovirta R, Syrjänen T, Pirinen J, Salonen H, Nevalainen A, Pekkanen J.
    Journal: Indoor Air; 2018 Mar; 28(2):287-297. PubMed ID: 29151276.
    Abstract:
    There is no commonly approved approach to detect and quantify the health-relevant microbial exposure in moisture-damaged buildings. In 39 single-family homes with severe moisture damage, we studied whether concentrations of viable microbes in building material samples are associated with health among 71 adults and 68 children, and assessed with symptoms questionnaires, exhaled NO, and peak expiratory flow (PEF) variability. Symptoms were grouped into three scores: upper respiratory symptoms, lower respiratory symptoms, and general symptoms. The homes were divided into three groups based on viable counts of fungi, actinomycetes, and total bacteria cultivated from building material samples. Highest group of actinomycete counts was associated with more general symptoms, worse perceived health, and higher daily PEF variability (aOR 12.51; 1.10-141.90 as compared to the lowest group) among adults, and with an increase in lower respiratory symptoms in children, but the confidence intervals were wide. We observed significant associations of fungal counts and total microbial score with worse perceived health in adults. No associations with exhaled NO were observed.
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