Aspergillus Niger

Aspergillus is an infection by the fungus Aspergillus. Aspergillus describes a large number of diseases involving both infection and growth of fungus as well as allergic responses. Aspergillus can occur in a variety of organs, both in humans and animals. All animals and many plants have highly efficient mechanisms to prevent themselves being infected by Aspergillus, and it is usually only when those mechanisms are defective in some way that Aspergillus can grow within the body.
Sources of increased risk include - dirty air conditioning units, compost heaps and damp or flood - damaged housing, all of which can yield higher numbers of aspergillus spores. Aspergillus does not solely affect humans; birds and animals can also develop aspergillus, and some plant diseases and food spoilage may be due to aspergillus infection.