the opportunistic mould aspergillus is a ubiquitous fungus. diseases caused by aspergillus species are most commonly caused by aspergillus fumigatus. the spectrum of disease caused by aspergillus is dependent on the health of the immune system. the ranges of illnesses individuals acquire are aspergilloma, allergic bronchopulmonary aspergillosis, invasive aspergillosis, sinusitis, otomycosis, oc...