Provided herein is are methods of reducing the number and severity of acute exacerbations of asthma in an asthma patient, comprising administering to a patient with a history of acute exacerbations of asthma an effective amount of an anti-interleukin-5 receptor (IL-5R) antibody or antigen-binding fragment thereof, for example, an anti-IL-5R&alpha； antibody or antigen-binding fragment thereof, e.g., benralizumab.
