P RISK OF PN AFTER RSV

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5 TAKE-HOME POINTS — RSV Hospitalisation Age & Risk of Subsequent Bacterial Pneumonia (Videholm et al., 2026)

1. Large national cohort strengthens evidence
   The study followed ~1.6 million Swedish children and identified over 29,000 RSV hospitalisations, making this a robust population-level analysis of long-term respiratory outcomes.

2. RSV hospitalisation increases later pneumonia risk
   Children hospitalised for RSV had a significantly higher risk of subsequent bacterial pneumonia compared with those without RSV admission.

3. Older age at RSV hospitalisation = higher relative risk
   The risk of later bacterial pneumonia was greater when RSV hospitalisation occurred at older ages (especially 12–23 months) compared with infants under 6 months.

4. Risk is highest soon after RSV infection
   The association was strongest in the first 0–2 months after RSV hospitalisation, but elevated risk persisted beyond 3 months across all age groups.

5. Implications for prevention and risk stratification
   Findings suggest that preventing RSV—particularly beyond early infancy—and identifying higher-risk older infants may help reduce later bacterial pneumonia burden, though residual confounding (e.g., comorbidities) may partly influence results.