Aspergillus fumigatus is a filamentous fungus that can be found worldwide. It is considered an airborne saprophytic fungi. Because of this, it naturally lives in the soil and is a common mould found among compost and plant surfaces.
Aspergillus fumigatus is the most frequent cause of invasive fungal infection in immunosuppressed individuals, which include patients receiving immunosuppressive therapy for autoimmune or neoplastic disease, organ transplant recipients, and AIDS patients. A. fumigatus primarily causes invasive infection in the lung and represents a major cause of morbidity and mortality in these individuals