Aspergillus

Habitat and Health Implications
This genus contains more than 160 recognized species. They are frequently
isolated from forest products, soils, compost piles, grains, nuts, cotton,
organic debris, stored food and feed products in tropical and subtropical
regions. It can be found indoors in water damaged building materials. Spores
can also be found in moist ventilation systems and house dust. Some species
are parasitic on insects, plants and animals, including man. All of the species
contained in the genus should be considered allergenic. A few species can
cause aspergillosis in humans with compromised or defective immune
systems. Aspergillosis is now the second most common fungal infection
requiring hospitalization in the United States. Many
Aspergillus species
produce mycotoxins that may be associated with diseases in humans and
other animals. Other species are used in the manufacture of food, such as
blue cheese and soy sauce.
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