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Human Metapneumovirus as a causative agent of acute bronchiolitis in infants

Paraskevi Xepapadaki1, Stelios Psarras, Apostolos Bossios

  • 1Research Laboratories, Second Department of Pediatrics, University of Athens, 13 Levadias Street, 11527 Goudi, Athens, Greece.

Journal of Clinical Virology : the Official Publication of the Pan American Society for Clinical Virology
|May 12, 2004
PubMed
Abstract

Insights

Human Metapneumovirus (hMPV) is a common cause of infant bronchiolitis, often presenting similarly to Respiratory Syncytial Virus (RSV). This study found hMPV in 16% of cases, highlighting its significance in pediatric respiratory infections.

Area of Science:

  • Virology
  • Pediatric Respiratory Infections
  • Molecular Diagnostics

Background:

  • Human Metapneumovirus (hMPV) is a recently identified paramyxovirus implicated in acute respiratory tract infections (RTIs) in children.
  • Bronchiolitis, a common pediatric RTI, often has an unidentified viral etiology in a significant proportion of cases.

Purpose of the Study:

  • To investigate the prevalence of hMPV in a well-characterized cohort of hospitalized infants with acute bronchiolitis.
  • To determine the clinical and laboratory characteristics associated with hMPV detection in bronchiolitis.

Main Methods:

  • Nasal washes were collected from 56 infants hospitalized for acute bronchiolitis.
  • RNA extraction and reverse transcription-polymerase chain reaction (RT-PCR) were employed for hMPV detection.
  • Clinical data were analyzed to correlate viral presence with disease characteristics.

Main Results:

  • hMPV was detected in 16% of the bronchiolitis cases.
  • Respiratory Syncytial Virus (RSV) was the most prevalent pathogen (67.9%).
  • hMPV was found alone or co-infecting with RSV, exhibiting similar seasonal patterns.
  • No significant differences in clinical or laboratory features were observed between hMPV-positive and RSV-positive bronchiolitis cases.

Conclusions:

  • hMPV is a significant and common causative agent in infant bronchiolitis.
  • The clinical presentation of hMPV-associated bronchiolitis is comparable to that of RSV.
  • RT-PCR is an effective method for identifying hMPV in pediatric respiratory samples.

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