Assessment of mite numbers: New methods and results

Bischoff, E.; Fischer, A.; Liebenberg, B.

doi:10.1007/bf01201489

Cited by 19 publications

(30 citation statements)

References 5 publications

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“…Mobility and heat escape methods, similar to those described by Bischoff et al (1992), were compared in side-by-side tests within 0.3m 2 areas of carpets, using either installed carpet within buildings, as described later, or a mat held in a conditioned room at 26°C and 60-70% RH.…”

Section: Mite Collection Methodsmentioning

confidence: 99%

“…Bischoff et al (1992) estimated that over 24 hours this method collected approximately 8% of mites present at 25% RH and 22-35% of mites at 75% RH. The proportion collected in the present investigation was estimated by re-applying new tape to the same area of carpet for nine consecutive 24-hour periods.…”

Section: Optimised Mite Collection Methodsmentioning

confidence: 99%

“…Vacuum cleaner collection of accumulated dust is a poorly controlled process and the type and amount of dust collected must depend heavily on the cleaner itself and the properties of the surface being cleaned. It has been/bund that only a very small proportion of dust and house dust mites (approximately 2% of mites)are collected by vacuum cleaning (Arlian et aL, 1982;Bischoff et al, 1992). A mite number relative to the mass of dust collected will be sensitive to variations in the nature of the dust (e.g.…”

mentioning

confidence: 99%

“…density). Also, isolation of mites from dust samples by flotation has been found to be variable and not reproducible (Bischoff et al, 1992). These last authors describe two new methods applied in the laboratory for estimating total mite numbers in furnishings, particularly carpeting: a 'mobility' method which collected up to 30% of mites and a 'heat escape' method which collected up to 78% of mites.…”

mentioning

confidence: 99%

“…This report investigates test conditions for optimum mite collection with the meth~xts of Bischoff et al (1992) and applies the optimum method to field sampling of mites at different locations in the carpets of four buildings. This is a preliminary study to develop a screening procedttrc for wider application in building investigations of factors affecting house dust mite numbers.…”

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confidence: 99%

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Optimisation of a screening procedure for house dust mite numbers in carpets and preliminary application to buildings

Brown

1994

Exp Appl Acarol

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The relative performances of the mobility and heat escape methods for measuring house dust mite numbers in carpet has been evaluated. The optimum method was found to be the mobility method for 24 hours at ambient temperatures which exhibited a mite collection efficiency of approximately 30%. Measurements in three dwellings showed that the method should be applied to carpet at several locations in the living room and/or bedrooms as a general sampling procedure, or adjacent to loungeroom seating to determine the worst case scenario. Carpets using different types of fibre within the same dwelling should be assessed separately. For the limited number of dwellings investigated, wool carpets were found to exhibit higher mite numbers than nylon carpets, even when the former had been insect-resist treated. No house dust mites were found in the wool carpets of an office building which was mechanically ventilated and heated and achieved low indoor humidities in winter.

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Section: Mite Collection Methodsmentioning

confidence: 99%

Section: Optimised Mite Collection Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Optimisation of a screening procedure for house dust mite numbers in carpets and preliminary application to buildings

Brown

1994

Exp Appl Acarol

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Regulatory Action Criteria for Filth and Other Extraneous Materials

Olsen

1998

Regulatory Toxicology and Pharmacology

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Forty-seven species of flies have been reliably associated with filthy conditions that might allow the spread of foodborne pathogens. These are categorized as "filth flies." Of that 47, only 21 species represent a potential threat to human health as scientifically proven causative agents of foodborne myiasis or as carriers of enteropathogenic Escherichia coli, Salmonella, Shigella, and other foodborne pathogens. These 21 species are categorized as "disease-causing flies" based on strict scientific criteria. The criteria are association with E. coli, Salmonella, AND Shigella; synanthropy; endophily; communicative behavior; attraction to both excrement and food products; and recognition by authorities as a potential health hazard. Within Hazard Analysis and Critical Control Point and other U.S. Food and Drug Administration regulatory frameworks, disease-causing flies are contributing factors to the spread of foodborne disease that require preventive and corrective actions as appropriate under Sanitation Standard Operating Procedures, Good Manufacturing Practices, or pest control programs.

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The biology of allergenic domestic mites

Hart

1995

Clinic Rev Allerg Immunol

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Assessment of mite numbers: New methods and results

Cited by 19 publications

References 5 publications

Optimisation of a screening procedure for house dust mite numbers in carpets and preliminary application to buildings

Optimisation of a screening procedure for house dust mite numbers in carpets and preliminary application to buildings

Regulatory Action Criteria for Filth and Other Extraneous Materials

The biology of allergenic domestic mites

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