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Human metapneumovirus infections in hospitalised infants in Spain

M L García-García1, C Calvo, F Martín

  • 1Pediatrics Department, Severo Ochoa Hospital, Madrid, Spain. marialuzgarcia@terra.es

Archives of Disease in Childhood
|January 10, 2006
PubMed
Abstract

Insights

Human metapneumovirus (hMPV) is a common cause of infant respiratory infections, second only to RSV. This springtime virus frequently leads to bronchiolitis and wheezing in infants under two years old.

Area of Science:

  • Pediatrics
  • Virology
  • Infectious Diseases

Background:

  • Human metapneumovirus (hMPV) is a significant pathogen causing lower respiratory tract infections.
  • Young children and the elderly are particularly vulnerable to hMPV-related illnesses.

Purpose of the Study:

  • To investigate the clinical characteristics of hMPV infections in infants.
  • To compare hMPV infections with those caused by respiratory syncytial virus (RSV) in hospitalized infants.

Main Methods:

  • A prospective study analyzed clinical data of infants under two years old hospitalized with respiratory infections.
  • Multiple reverse transcription nested-PCR assays were used to detect various respiratory viruses, including hMPV and RSV.
  • hMPV presence was confirmed using two separate RT-PCR tests.

Main Results:

  • hMPV was detected in 14% of cases, making it the second most common virus after RSV among 749 children studied.
  • The peak incidence of hMPV occurred in March, with over 80% of affected children being under 12 months old.
  • Recurrent wheezing and bronchiolitis were the most frequent diagnoses; hMPV infections were associated with more frequent recurrent wheezing diagnoses compared to RSV.

Conclusions:

  • hMPV is a leading cause of lower respiratory tract infections in hospitalized infants, predominantly occurring in the spring.
  • hMPV infections in infants present clinically similarly to RSV infections, though recurrent wheezing is more common.
  • Co-infections with hMPV were frequent and did not present distinct clinical features compared to single infections.

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