Evaluating the Economic and Epidemiological Impact of RSV Hospitalizations in Southern Austria [Southern Austria Respiratory Syncytial Virus INpatient Investigation (ARNI Study)]

Objective

RSV bronchiolitis is a leading cause of hospitalization in infants and young children. We aimed to document the economic burden and epidemiology of RSV over seven seasons in Southern Austria.

Patients and Methods

All RSV-associated hospitalized (PCR-proven) children ≤ 5 years of age between 1 October 2015 and 30 April 2022 were collected retrospectively. Demographic and epidemiologic data, along with hospitalization costs (direct and indirect), were calculated.

Results

Among 976 children hospitalized due to RSV infection, 87% were healthy term infants, and 79% were < 12 months old. Prematurity (13%) and pre-existing conditions (11%) significantly impacted older children—59% of cases in the 2nd compared with 68% in the 1st year of live. RSV-related hospital costs were approximately €2.0 millions per year (of a total of 60 millions per year). RSV accounted for 19% of hospitalizations due to acute respiratory illness (ARI) in children ≤ 5 years, 37% of all ARI < 6 months, 28% of all ARI < 12 and 6.3% of all-cause hospitalizations < 12 months of age, respectively.

Conclusions

Every 5th hospitalization due to respiratory illness in children ≤ 5 years of age was associated with RSV, representing 7.9% of all hospitalizations and 3.3% of all paediatric hospitalization costs.