Early flu antivirals linked to markedly fewer pediatric hospitalizations

Clinical takeaway: For pediatric outpatients with confirmed influenza, initiating antiviral therapy within 48 hours of symptom onset may substantially reduce the likelihood of subsequent hospitalization and severe illness.

Despite guideline recommendations, outpatient antiviral use in children remains inconsistent. These findings suggest early treatment may do more than shorten symptoms, potentially preventing severe illness and hospitalization.

In a multicenter, retrospective case-control study from northern Taiwan, investigators evaluated 1,492 children younger than 18 years with laboratory-confirmed influenza seen from 2020 through 2023. The cohort included 354 children who were subsequently hospitalized and 1,138 nonhospitalized controls matched by age group and influenza season. Early antiviral treatment was defined as therapy started within 48 hours of symptom onset.

Overall, 80.8% of children received early antivirals. Hospitalization occurred in 16.1% of those treated early versus 55.9% of children who received treatment later or not at all. Severe influenza-related illness occurred in 0.7% versus 3.1%, respectively; no deaths occurred. After adjustment for demographics, comorbidities, vaccination, co-infection, and health care use, early antiviral therapy was associated with an estimated 81% reduction in influenza-related hospitalization. The association was similar across age groups: an 81% reduction among children age 5 or younger and an 85% reduction among older children. Results remained consistent across sensitivity analyses and with early oseltamivir or zanamivir treatment.

The authors emphasized that antivirals should supplement, not replace, vaccination, and concluded that their findings support “expanding timely access to antiviral treatment, coupled with rapid diagnosis” to reduce pediatric influenza burden. Because the study was observational and hospital-based, residual confounding and limits to generalizability remain.

Source: Huang YN, et al. (2026 Aug 17) Pediatrics. Early Antiviral Therapy in Pediatric Outpatients and Risk of Influenza-Related Hospitalization