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Detection of new respiratory viruses in hospitalized infants with bronchiolitis: a three-year prospective study

C Calvo1, F Pozo, M L García-García

  • 1Pediatrics Department, Severo Ochoa Hospital, Madrid, Spain. ccalvorey@ono.com

Acta Paediatrica (Oslo, Norway : 1992)
|February 19, 2010
PubMed

Insights

Respiratory syncytial virus (RSV) is common in infant bronchiolitis, but other viruses like rhinovirus (RV), human bocavirus (HBoV), and human metapneumovirus (hMPV) also cause significant single infections with distinct seasonality.

Area of Science:

  • Pediatrics
  • Virology
  • Infectious Diseases

Background:

  • Bronchiolitis is a common respiratory infection in infants.
  • Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis.
  • The clinical impact of other viruses in infant bronchiolitis is less understood.

Purpose of the Study:

  • To describe the clinical impact of non-RSV viruses in hospitalized infants with bronchiolitis.
  • To compare clinical characteristics of RSV-only infections with other single-agent viral infections.

Main Methods:

  • A 3-year prospective study of hospitalized infants with bronchiolitis.
  • Frequency analysis of 16 respiratory viruses.
  • Comparison of clinical data for RSV-only versus other single viral infections.

Main Results:

  • RSV was detected in 61.3% of cases; other viruses (Rhinovirus, HBoV, hMPV) were significant single agents in 47% of patients.
  • Rhinovirus (RV), human bocavirus (HBoV), and human metapneumovirus (hMPV) were significant as single infections.
  • RSV patients were younger and required more intensive care than those with HBoV or hMPV; seasonality differed significantly.

Conclusions:

  • While RSV dominates winter bronchiolitis, other viruses like RV, HBoV, and hMPV are important single causative agents.
  • Clinical presentations were similar across single viral infections, but seasonality varied.
  • Understanding the role of non-RSV viruses is crucial for managing infant bronchiolitis.
Abstract

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