The moisture requirements of moulds isolated from domestic dwellings

Grant, C.; Hunter, Chad; Flannigan, B.; Bravery, A. F.

doi:10.1016/0265-3036(89)90002-x

Cited by 231 publications

(175 citation statements)

References 20 publications

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“…In our northern climate, the most common causes of moisture damage are defects in the construction or maintenance of the dwellings (10,11). As materials become moist, microbial growth develops, the species present and the abundance of their growth being determined by the nutrient and moisture conditions of the building (12,13). Fungi can grow on surfaces whenever there is sufficient moisture (14).…”

mentioning

confidence: 99%

Nasal symptoms among residents in moldy housing

Ruoppi¹,

Husman²,

Reiman³

et al. 2003

Scand J Work Environ Health

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mentioning

confidence: 99%

Nasal symptoms among residents in moldy housing

Ruoppi¹,

Husman²,

Reiman³

et al. 2003

Scand J Work Environ Health

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“…The moisture levels of the batt insulation removed from the same study three weeks after the water had drained was still at 100% (Aglan et al 2014). S. chartarum is considered a tertiary colonizer, requiring water activity greater than 0.9 (Grant et al 1989), and thus would thrive in a very moist environment.…”

Section: Resultsmentioning

confidence: 99%

Mycotoxin Production by Stachybotrys chartarum on Water-Damaged Building Materials

2017

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The major question after a flooding event is whether to remove or remediate the building materials so that potentially harmful mold growth and their by-products cannot cause serious health problems for susceptible individuals. The purpose of this study was to determine the growth of Stachybotrys chartarum and corresponding production of macrocyclic trichothecenes on different components of a residential wall up to 65 days after a simulated flood event. Small-scale residential walls constructed of fiberglass batt insulation, oriented strandboard, gypsum wallboard, and lumber were destructively sampled at four time points. All four building materials contained notable levels of macrocyclic trichothecenes on all collection days. The highest concentrations of macrocyclic trichothecenes were on the paper siding of the gypsum wallboard, followed by the paper siding of the batt insulation and wood lumber. There was a significant increase in trichothecene concentration over time, particularly on the gypsum. The DNA concentrations of the mold were significantly higher on the batt insulation than on the wood products, and the mold concentrations also increased over time on the batt insulation and gypsum, but not on the wood products. It was concluded that if a flooding event should occur, the insulation and gypsum should be removed from the home and the remaining materials should be remediated.

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“…The fungi mentioned are supported by high air humidity and temperature. From the ecological viewpoint, they are classified as thermophilic or thermotolerant, with high water requirements; in particular, Aspergillus fumigatus needs a water activity (aw) level of at least 0.9-0.95 in order to develop [30,31]. Hedayati et al state that the presence of Aspergillus flavus in hospitals is determined by the construction and maintenance level of the buildings and the conditions in the surrounding area [32].…”

Section: Discussionmentioning

confidence: 99%

Microbiological analysis of bioaerosols collected from Hospital Emergency Departments and ambulances

Bielawska-Drózd¹,

Cieślik²,

Bohacz³

et al. 2018

Ann Agric Environ Med.

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Introduction and objective. The goal of the study was a microbiological, qualitative and quantitative analysis of bioaerosol at the workplace of medical personnel (Health Emergency Departments (HEDs), ambulances), and comparative administration offices with an expected neutral occupational exposure to biological agents measured with individual Button Sampler. Materials and method. Personal sampling was performed with Button Sampler instrument loaded with gelatine filters in 10 HEDs, in 9 ambulances and in 9 offices to assess the occupational biological agents' exposure in air. Sampling was conducted from March until April 2016. Samples were quantitatively assessed for viable and total number of bacteria and fungi. Routine procedures for microbiological diagnostics were implemented. Data were analysed using Kruskal-Wallis and Mann-Whitney statistical tests with α=0.05. P value less than 0.05 were considered significant. Results. At the workplaces assessed, the concentrations of viable microorganisms in HEDs were 1.3 × 10 2 -4.2 × 10

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The moisture requirements of moulds isolated from domestic dwellings

Cited by 231 publications

References 20 publications

Nasal symptoms among residents in moldy housing

Nasal symptoms among residents in moldy housing

Mycotoxin Production by Stachybotrys chartarum on Water-Damaged Building Materials

Microbiological analysis of bioaerosols collected from Hospital Emergency Departments and ambulances

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