Objective:

To compare clinical characteristics, laboratory results, and prognostic differences in children with RSV infection who are codetected with Streptococcus pneumoniae and Haemophilus influenzae, and to identify early predictive markers for such codetections, particularly focusing on the implications of these differences.

Key Findings:

• A history of wheezing increased the likelihood of codetection with both bacteria.
• Children with S. pneumoniae codetection presented more frequently with fever.
• Children with H. influenzae codetection were more prone to wheezing and respiratory distress.
• Elevated inflammatory markers, particularly IL-6, were noted in children with bacterial codetection.
• Children with codetection required more respiratory support and had longer hospital stays.
• Extrapulmonary manifestations were a significant common factor for both codetections.

Interpretation:

Children with RSV and bacterial codetection exhibit significantly higher inflammatory markers and clinical severity, necessitating increased medical intervention, particularly early recognition and treatment.

Limitations:

• Single-center study may limit generalizability.
• Retrospective design may introduce bias in data collection.
• The study's location may affect the applicability of findings to other regions.

Conclusion:

Codetection of S. pneumoniae or H. influenzae in children with RSV infection is associated with increased inflammatory markers, higher PICU admission rates, and longer hospital stays.