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Aspergillus fumigatus
Wed, 08/19/2009 - 10:52 — aemtek
Genus:
Aspergillus
Species:
fumigatus
Distribution:
Extremely abundant with a worldwide distribution, thermotolerant (12°-57°C).
Substrate:
Saprophytic in soil, compost, and on decaying organic materials, more commonly found in plantations, garden soils, and cultivated fields. Also a parasite of animals, especially birds, infecting mainly the lungs and causing high mortality.
Dispersal:
Conidia or chains of conidia easily become airborne and are dispersed by wind.
Indoor Occurance:
A common indoor contaminant. Often found in house dust infiltrating from outdoor air. Can grow on various warm, damp indoor materials, such as wallpaper, particle board, cereals, humidifer water, etc.
Allergenicity:
Allergenic. (see record 6)
Pathogenicity:
Opportunistic pathogen. It may cause, invasive or noninvasive, localized or systemic, aspergillosis including, pulmonary, cerebral, bone, cardiovascular, nasal, ocular and organ infections, especially in immunocompromised people.
Notes On Identification:
Not distinctive on spore trap samples. Genus can be identified on surface or bulk samples if the entire sporulating structure is present. Species identification requires mycological examination of aporulating cultures or molecular methods.
Spore Types:
Conidia mostly 2.5-3.0 µm in diameter, hyaline to light greenish, globose to subglobose, echinulate, in chains.