Natural Origin - Commonly found outdoors in soil, food, cellulose and grains.
Indoor Origin - Common fungal genus, especially in indoor environments. They can pose a danger indoors because they can grow in a few days. Commonly found in water damaged homes, but it can be isolated from paints, soil, and building materials wall, wallpaper, and house dust.
Pathoginicity - May be in the form of invasive infection, infecting various sites in individuals with lower resistance due to immunocompromised systems. Some species produced mycotoxins. Commonly considered a contaminant.
Diseases - Some Aspergillum species can cause a group of diseases known as Aspergillosis. Penicillium has been known to cause Keratitis, external ear infections, respiratory infections and urinary tract infections.
Allergen - Known to be allergenic.