Asthma, asthma treatment, biologics, infections, virus Severe asthma in adults does not significantly affect the outcome of COVID-19 disease: Results from the Italian Severe Asthma Registry Keywords: asthma; asthma treatment; biologics; infections; virus EN asthma asthma treatment biologics infections virus 902 905 4 03/09/21 20210301 NES 210301 To the Editor, Severe asthma is a chronic disease affecting around 3%-8% of adult asthma population in Europe, with the refractory form estimated to occur in 0.1% of the general population.1,2 Severe asthma is characterized by increased use of healthcare resources (ie, emergency room/hospital admissions, access to intensive care units (ICU), and use of biologics) due to exacerbations compared with the less severe form. [Extracted from the article]