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Comparison of airborne spore concentrations and fungal allergen content

by Barbara Fl??ckiger, Theo Koller, Christian Monn
Aerobiologia ()
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The exposure to spores causing health effects is usually assessed by determining the concentration of viable spores per cubic meter of air (CFU/m3). Since allergens might also be present in dead spores or smaller particles, the objective of this studywas to investigate the correlation between the viable spores of Alternaria and Cladosporium at different indoor and outdoor sites and the corresponding allergen concentration detected with a specially developed ELISA (Enzyme Linked Immunosorbent Assay). In outdoor air, the results show a strong correlation between the different sampling techniques applied for viable spores (Slit-Sampler and Multistage Liquid Impinger) and between the viable spores and the allergen concentrations detected in the liquid samples of the impingers. Indoors, the number of viable spores and the allergen concentration do not correlate and the allergen load is underestimated if colony counting methods are used.

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