Acute viral bronchiolitis before and after implementation of nirsevimab prophylaxis in Italy: a multicentre retrospective cohort study
Summary Background Acute viral bronchiolitis is the leading cause of hospitalisation in the first year of life, with Respiratory Syncytial Virus (RSV) accounting for more than 60% of cases. A long-acting monoclonal antibody (nirsevimab) has been introduced for infants entering their first epidemic season. 2024–2025 sea...