Aspergillus is a ubiquitous mould genus typically found in soil and rotting vegetation. Sources, modes and treatment. In defining the diseases caused by Aspergillus, the term' aspergillosis 'is used but most generally refers to those caused by Aspergillus fumigatus. Aspergillus flavus, Aspergillus terreus and Aspergillus niger are other animals that can cause human illness . Aspergillus releases massive numbers of conidia (asexual spores) into the air as part of its life cycle and can thus be present in both outdoor and indoor environments. Aspergillus conidia inhalation is normally a daily phenomenon, but only a limited number of individuals experience chronic illness and are at an elevated risk of aspergillosis (e.g. people with compromised immune systems and/or impaired lungs). It is difficult to quantify the burden of aspergillosis in the UK because of the insensitivity of fungal culture, the lack of regular, sensitive, non-culture diagnostic testing and the lack of a national surveillance network. A 2017 study estimated that 3,288-4,257 cases of invasive aspergillosis, up to 3,600 cases of recurrent pulmonary aspergillosis and 110,667-235,070 cases of allergic bronchopulmonary aspergillosis (ABPA) complicating asthma or cystic fibrosis are registered every year in the UK .
Published Date: 2020-11-27; Received Date: 2020-11-06