Prevalence of β-agonist inhalation for outpatients in a pediatric emergency center during enterovirus D68 epidemic.

Background: Enterovirus D68 (EV-D68) has been reported to have caused severe bronchial asthma attacks and hospitalization epidemics in Japan in September 2015.

Objective: To investigate the prevalence of β-agonist inhalation in a pediatric emergency center during a period of increased hospitalization for bronchial asthma, which was suggested to be associated with EV-D68.

Methods: We investigated the prevalence of β-agonist inhalation in a pediatric emergency center in Saga city, Japan, from April 2013 to October 2015, and also clarified the trends in bronchial asthma hospitalization in the same area during that time.