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Utilisation des composés organiques volatils microbiens comme biomarqueurs de l'exposition aux moisissures en milieu de travail ? Étude de faisabilité
La problématique de la qualité de l'air est un aspect important de la santé et de la sécurité au travail. Les moisissures et leurs composés sont des contaminants auxquels les travailleurs peuvent être exposés. Ces microorganismes sont responsables de nombreux problèmes de santé (maladies ou inconforts), incluant des allergies aiguës, de l'asthme, des sinusites/rhinites, des céphalées, de l'hypersensibilité environnementale, des irritations et des inflammations. La surveillance classique de...
Dampness and Mold Assessment Tool – General Buildings
The health of those who live, attend school, or work in damp buildings has been a growing concern through the years due to a broad range of reported building-related symptoms and illnesses. Research has found that people who spend time in damp buildings are more likely to report health problems such as these: Respiratory symptoms (such as in nose, throat, lungs) Development or worsening of asthma Hypersensitivity pneumonitis (a rare lung disease caused by an immune system response to repeated inhalation of sensitizing substances such as bacteria, fungi, organic dusts, and chemicals) Respiratory...
Développement d’une approche par séquençage de nouvelle génération pour l’étude de la diversité fongique des bioaérosols
Afin d'explorer l'association entre les bioaérosols, l'exposition aux moisissures et les effets sur la santé respiratoire, l'objectif général de cette activité de recherche était de proposer une méthode d'analyse permettant de déterminer, de manière quantitative, la diversité fongique des bioaérosols, sans égard à leur culture. D'une manière plus spécifique, deux marqueurs génomiques fongiques ont été ciblés par l'approche de séquençage...
Pneumopathies d'hypersensibilité professionnelles
Les pneumopathies d'hypersensibilité (PHS) sont des pathologies immunologiques allergiques, non IgE médiées, en relation avec l'exposition à de nombreuses substances organiques et quelques substances chimiques de bas poids moléculaire. D'après les données épidémiologiques disponibles, la prévalence de cette maladie reste rare, les formes les plus fréquentes étant la maladie du " poumon de fermier ", celle " des éleveurs d'oiseaux " et les PHS aux fluides de coupe contaminées...
Airborne fungal species associated with mouldy and non-mouldy buildings
Effects of air change rates, humidity, and air velocity Several studies have shown an association between dampness and health issues like headache and asthma. To better understand the exposure risk of fungal growth in buildings this study investigates the release of fungi from gypsum boards infested with fungi from a moisture-damaged house. Further, the composition and concentration of fungal species in indoor air of five non-moisture-damaged homes are analysed, and the ratio between species associated- and not associated with moisture-damaged buildings are related to air change rate (ACR) and...
Dust, Endotoxin, Fungi, and Bacteria Exposure as Determined by Work Task, Season, and Type of Plant in a Flower Greenhouse
Background: Greenhouse workers are exposed to dust, endotoxin, fungi, and bacteria potentially causing airway inflammation as well as systemic symptoms. Knowledge about determinants of exposure is a prerequisite for efficient prevention through knowledge-based reduction in exposure. The objective of this study was to assess the occupational exposure in a flower greenhouse and to investigate the impact of work tasks on the intensity and variability in exposure. Methods: Seventy-six personal full-shift exposure measurements were performed on 38 employees in a Danish flower greenhouse producing Campanula...
Mesure de l'exposition aux moisissures et atteintes respiratoires chez les affineurs de fromages
L'affinage de fromages nécessite des conditions d'humidité et de température favorables à la présence de moisissures, parfois typiques d'une région. Le travail en cave d'affinage va exposer les salariés à ces moisissures dont certaines espèces, nécessaires à la qualité du produit fini, sont connues pour être allergisantes. Certains de ces salariés peuvent développer des signes respiratoires plus ou moins marqués (rhinite...) qui pourront conduire à des pathologies...
Investigation of respiratory and dermal symptoms associated with metal working fluids at an aircraft engine manufacturing facility
Background Each year, 1.2 million metalworkers are exposed to metalworking fluids (MWFs), which can cause dermal and respiratory disease. The National Institute for Occupational Safety and Health (NIOSH) conducted a health hazard evaluation of MWF exposures at an aircraft engine manufacturing facility. The objectives were to determine employee exposures to endotoxin and MWFs in the air, characterize symptoms experienced by employees working with MWFs, compare them to symptoms of employees unexposed to MWFs, and make recommendations for reducing exposures based on results. Methods Four hundred seven...
NIEHS Mold Remediation Guidance
Mold is one of the most widespread hazards that hurricane and disaster clean-up workers are likely to encounter. This guidance was developed by the National Institute of Environmental Health Sciences (NIEHS) as a health and safety resource for workers, volunteers, and homeowners who will participate in hurricane and disaster response and clean-up activities to help them understand how to identify and control hazards from mold. Trainers may use this guidance to aid in the development of a mold remediation awareness level course or other awareness level materials such as fact sheets and table-top...
NIOSH Alert - Preventing Occupational Respiratory Disease from Exposures caused by Dampness in Office Buildings, Schools and Other Non-Industrial Buildings
Office buildings, schools, and other non-industrial buildings may develop moisture and dampness problems from roof and window leaks, high indoor humidity, and flooding events, among other things. This CDC-NIOSH Alert contains recommendations regarding building design and use. For this Alert, CDC defines "dampness" as the presence of unwanted and excessive moisture in buildings. Research studies have shown that dampness-related exposures from building dampness and mould have been associated with respiratory symptoms, asthma, hypersensitivity pneumonitis, rhinosinusitis, bronchitis, and...
Quality of life of patients with asthma related to damp and moldy work environments
Objective: Long-term outcomes of asthma related to exposure to workplace dampness are not well known. The aim of this study was to evaluate the quality of life (QOL) of patients with asthma related to damp and moldy workplaces and characterize factors influencing QOL. Methods: Using a questionnaire, we followed 1267 patients previously examined for suspected occupational respiratory disease related to exposure to damp and moldy indoor environments. In addition to demographic and other background data, the questionnaire included sections on current employment status, QOL, anxiety and depression...
Current control standards for tasks with high exposure to grain dust
Six sectors of the British grain industry were investigated to try to identify and characterise exposure-significant tasks in terms of the inhalable dust, microorganism, endotoxin and mycotoxin exposures associated with these tasks. Information was collected from stakeholders in the industry by telephone interviews and during visits to company premises. In addition, the available scientific literature was reviewed to identify relevant exposure data. Source : http://www.hse.gov.uk/research/rrhtm/rr829.htm
Exposition à des moisissures dans le milieu hospitalier et dans des usines de production de biogaz
Intérêt des protections individuelles et collectives Les champignons filamenteux se développent de manière ubiquitaire sur de nombreux substrats organiques. Les spores se retrouvent dans les poussières et sont souvent inhalables. De plus en plus de données scientifiques pointent l'inhalation de moisissures comme cause d'allergie respiratoire ou cutanée aussi bien dans l'environnement (maisons insalubres) que dans le milieu du travail, notamment dans les industries de compostage de matière organique ou de fabrication de bioéthanol...
Comparison of Mold Exposures Between Employees at a Severely Water-Damaged School and Employees at a School Without Significant Water Damage
The HHE Program evaluated a severely water-damaged school where employees reported difficulty breathing, chronic sinusitis, and immune system problems. As a comparison for the evaluation, investigators also evaluated a school around the same age that had no history of water damage or mold contamination. Investigators found that employees at the severely water-damaged school had a significantly higher prevalence of symptoms than employees at the comparison school. Source : http://www.cdc.gov/niosh/hhe/reports/pdfs/2005-0135-3116.pdf
Compendium sur les moisissures
Le site Web de l'Institut national de santé publique du Québec accueille depuis peu un tout nouveau compendium sur les moisissures. Celui-ci regroupe un ensemble de fiches descriptives des espèces de moisissures qui contaminent le plus fréquemment l'environnement intérieur, chacune des fiches traitant des aspects biologiques, médicaux et toxicologiques des moisissures. Plus précisément, ces fiches : - rappellent les effets sur la santé associés à la contamination fongique en milieu intérieur; - donnent une...
Mycotoxines en milieu de travail II
Exposition, risques, prévention Les mycotoxines (aflatoxines, ochratoxine A, trichothécènes...) sont des substances toxiques sécrétées par des moisissures dans certaines conditions environnementales. Une exposition professionnelle a été rapportée dans les filières céréales, agroalimentaire (café, épices...), élevage, fabrication d'aliments pour animaux, compostage, certaines activités de laboratoire... Les mycotoxines peuvent être retrouvées sur des matériaux de...
Mycotoxines et milieu professionnel
Les mycotoxines sont des substances toxiques qui peuvent contaminer de nombreuses denrées alimentaires et être responsables d'intoxications aiguës ou chroniques chez l'homme et les animaux. Cette première partie présente une synthèse des connaissances sur les principales mycotoxines. Source: http://www.hst.fr/inrs-pub/inrs01.nsf/1fca26673b3a31e081256c9400095030/8f182daaabfa38f4c1256f5b004c8f18/$FILE/visu.html
Dampness and Mold in Buildings
Dampness results from water incursion either from internal sources (e.g. leaking pipes) or external sources (e.g. rainwater). Dampness becomes a problem when various materials in buildings (e.g., rugs, walls, ceiling tiles) become wet for extended periods of time. Excessive moisture in the air (i.e., high relative humidity) that is not properly controlled with air conditioning can also lead to excessive dampness. Flooding causes dampness. Dampness is a problem in buildings because it provides the moisture that supports the growth of bacteria, fungi (i.e., mold), and insects. In the presence of...

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