Colonization of fiberglass insulation used in heating, ventilation and air conditioning systems

Price, Daniel L.; Simmons, Robert B.; Ezeonu, Ifeoma M.; Crow, Sidney A.; Ahearn, Donald G.

doi:10.1007/bf01584000

Cited by 33 publications

(16 citation statements)

References 3 publications

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“…Sections of the colonized samples were placed on Mycological agar with 0.05% chloramphenicol and incubated at 25 °C for 5-7 days. As described earlier, fungi were identified based on comparisons of reproductive structures observed directly on the bulk samples with those seen in pure culture [8,13].…”

Section: Methodsmentioning

confidence: 99%

Allergic fungal sinusitis in the southeastern USA: involvement of a new agentEpicoccum nigrumEhrenb. ex Schlecht. 1824

Noble¹,

Crow²,

Ahearn³

et al. 1997

Med Mycol

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Alternaria alternata, Aspergillus spp., Bipolaris spicifera, Curvularia lunata, Epicoccum nigrum and Fusarium solani were isolated repeatedly from groups of patients among 96 diagnosed with allergic fungal sinusitis (AFS). Epicoccum nigrum was obtained consistently from four patients, one of whom yielded mycelial masses consistent in morphology with E. nigrum. Fifteen of the predominant fungi recovered from air samples from selected patients' residences included the same species isolated from the mucin of its inhabitants. Air samples from other buildings, whose occupants (non-AFS individuals) complained of poor indoor air quality or of symptoms of the sick building syndrome (SBS), yielded some of the same species involved in AFS. An association of SBS with AFS was not established. Eight of the species implicated in AFS were found to colonize the surfaces of indoor construction and finishing materials at sites other than the residence of the patient. To our knowledge, this is the first report that E. nigrum can colonize nasal sinuses and cause AFS.

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Section: Methodsmentioning

confidence: 99%

Allergic fungal sinusitis in the southeastern USA: involvement of a new agentEpicoccum nigrumEhrenb. ex Schlecht. 1824

Noble¹,

Crow²,

Ahearn³

et al. 1997

Med Mycol

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show abstract

“…At three sites (selected on the basis of preliminary data detailed in the text), we installed additional filters in the banks and periodically examined the filters for developing fungi. Details of all procedures and types of filters are described elsewhere [4,[6][7][8]. The time-course of the observations encompasses the years 1996-2003.…”

Section: Methodsmentioning

confidence: 99%

Mold colonization during use of preservative-treated and untreated air filters, including HEPA filters from hospitals and commercial locations over an 8-year period (1996–2003)

Price

Simmons

Crow

et al. 2005

J IND MICROBIOL BIOTECHNOL

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High efficiency particulate arrestance (HEPA; 99.97% efficient at 0.3 microm) filters, filters with ASHRAE particulate arrestance rating of 90-95% at 1 mum (90-95% filters), and lower efficiency cellulosic-polyester filters from air conditioning systems in hospitals and commercial buildings were removed from the systems and examined microscopically for mold colonization. Cellulosic-type filters from systems with water entrainment problems typically were colonized, or became colonized upon incubation in moisture chambers. Species of Acremonium, Aspergillus, and Cladosporium were most common. With air filters of all types, treatment of filter media with an antimicrobial preservative tended to reduce or delay colonization. Mold colonization of HEPA and 90-95% filters was observed most often on the load surfaces, but two untreated HEPA filters were permeated with fungi, one with Aspergillus flavus, the other with Cladosporium sp. Air filters in heating, ventilating, and air conditioning (HVAC) systems, particularly those with chronic or periodic exposure to moisture, may serve as point sources for indoor molds.

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“…Colonization appeared related to the use of adsorbed organics and the availability of moisture. Price et al (1994) and , in laboratory challenge studies, demonstrated that certain types of new fiberglass insulation were readily colonized by certain species of fungi (e.g., Aspergillus versicolor) with resistance to formaldehyde residues as a probable selection factor.…”

Section: Growth Of Fungi In Hvac Systemsmentioning

confidence: 99%

Causes of Indoor Air Quality Problems in Schools: Summary of Scientific Research

Bayer¹

2001

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Colonization of fiberglass insulation used in heating, ventilation and air conditioning systems

Cited by 33 publications

References 3 publications

Allergic fungal sinusitis in the southeastern USA: involvement of a new agentEpicoccum nigrumEhrenb. ex Schlecht. 1824

Allergic fungal sinusitis in the southeastern USA: involvement of a new agentEpicoccum nigrumEhrenb. ex Schlecht. 1824

Mold colonization during use of preservative-treated and untreated air filters, including HEPA filters from hospitals and commercial locations over an 8-year period (1996–2003)

Causes of Indoor Air Quality Problems in Schools: Summary of Scientific Research

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