“…Of the approximately 10% of clinical asthma categorized as severe by American Thoracic Society/European Respiratory Society or Global Initiative for Asthma definitions [ 14 , 15 ], epidemiologic surveys have reported that 20–50% are associated with fungal sensitization phenotypes along this spectrum [ 16 , 17 , 18 ]. Clinically, there is now extensive international evidence that Af sensitization in particular is associated with a more severe and recalcitrant asthma phenotype, including greater airflow limitation, bronchiectasis, mucus plugging, clinical morbidity, diagnosed SAFS and ABPA, in both children and adults [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”