The leading cause of infant hospitalizations by race/ethnicity and time period, with percentage of total infant hospitalizations and corresponding 95% confidence intervals, National (Nationwide) Inpatient Sample, 2009–2019. Percentage of total infant hospitalizations for acute bronchiolitis due to respiratory syncytial virus (RSV) was provided for Asian/Pacific Islander as it was the second-ranked primary diagnosis. Abbreviation: AI/AN, American Indian/Alaska Native.