Abbreviations
CRSwNP=chronic rhinosinusitis with nasal polyps; EGPA= eosinophilic granulomatosis with polyangiitis; FF=fluticasone furoate; FF/UMEC=fluticasone furoate/umeclidinium/vilanterol; HES=hypereosinophilis syndrome; ICS/LABA=inhaled corticosteroid/long acting beta agonist; RSV=respiratory syncytial virus