Clinical Outcomes of Acute Viral Lower Respiratory Infections in Hospitalized Children

Margaret A Uchefuna1, Giddel Alvarado Castro1, Alekya Paripati1

  • 1Pediatrics, Woodhull Medical Center, New York City, USA.

Cureus
|November 25, 2025
PubMed

Insights

In healthy children under five hospitalized with viral lower respiratory tract infections (LRTIs), multiple viral infections correlate with more severe outcomes. This highlights the importance of identifying co-infections for predicting disease severity and guiding treatment.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Public Health

Background:

  • Viral lower respiratory tract infections (LRTIs) are a major health concern in young children.
  • While comorbidities increase LRTI risk, the impact on healthy children is less understood.
  • This study examines clinical outcomes of viral LRTIs in hospitalized children without comorbidities.

Purpose of the Study:

  • To compare clinical outcomes in healthy children hospitalized with viral LRTIs based on single vs. multiple viral pathogen detection.
  • To identify factors influencing disease severity in this pediatric population.

Main Methods:

  • Retrospective study of 646 children under five hospitalized for LRTIs.
  • Inclusion criteria focused on healthy children with no significant medical history.
  • Clinical outcomes analyzed included respiratory support needs, PICU transfer, and length of stay.

Main Results:

  • Multiple viral infections were associated with a higher proportion of pediatric intensive care unit (PICU) transfers (p=0.025).
  • The presence of any viral infection significantly correlated with the need for respiratory support (p<0.001).
  • No significant difference in length of hospital stay was found between single and multiple viral infections (p=0.077).

Conclusions:

  • Multiple viral infections in healthy children hospitalized with LRTIs are linked to more severe outcomes.
  • Findings underscore the importance of considering viral co-infections for severity prediction and clinical management.
  • Even in children without risk factors, viral co-infections warrant attention.
Abstract

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