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Human parainfluenza virus type 4 infection in Chinese children with lower respiratory tract infections: a comparison

Lili Ren1, Richard Gonzalez, Zhengde Xie

  • 1State Key Laboratory for Molecular Virology and Genetic Engineering and Dr. Christophe Mérieux Laboratory, IPB, CAMS-Fondation Mérieux, Institute of Pathogen Biology (IPB), Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College, Beijing 100730, China.

Journal of Clinical Virology : the Official Publication of the Pan American Society for Clinical Virology
|June 4, 2011
PubMed
Abstract

Insights

Human parainfluenza virus type 4 (HPIV-4) is a significant cause of severe acute lower respiratory tract infections in Chinese children. This study characterized HPIV-4

Area of Science:

  • Virology
  • Pediatrics
  • Infectious Diseases

Background:

  • Human parainfluenza viruses (HPIVs) are a major cause of acute respiratory tract infections (ARTIs).
  • While typically causing mild illness, HPIV-4 has been increasingly linked to severe respiratory syndromes and outbreaks in children.
  • Understanding HPIV-4's role in pediatric respiratory infections is crucial for public health.

Purpose of the Study:

  • To investigate the prevalence and clinical features of HPIV-4 in hospitalized children with acute lower respiratory tract infections (ALRTIs).
  • To characterize the epidemiological patterns of HPIV-4 in Beijing, China.
  • To compare HPIV-4 infections with other HPIV types in a pediatric population.

Main Methods:

  • Nasopharyngeal aspirates were collected from 2009 children hospitalized with ALRTIs between March 2007 and April 2010.
  • Reverse transcription-polymerase chain reaction (RT-PCR) and PCR analyses were employed to detect HPIV types and other respiratory viruses.
  • Clinical data and patient demographics were analyzed to characterize infection patterns.

Main Results:

  • HPIVs were detected in 12.2% of patients; HPIV-4 accounted for 10.2% of these cases (25 children).
  • HPIV-4 infections were observed year-round, similar to HPIV-3, with a median patient age of 20 months.
  • Clinical manifestations did not significantly differ between HPIV-1, -2, -3, and -4 infections, but HPIV-4 had lower co-detection rates with other viruses (44%) compared to other HPIVs.

Conclusions:

  • HPIV-4 is an important pathogen contributing to pediatric ALRTIs in China.
  • The study provides valuable insights into the epidemiology and clinical characteristics of HPIV-4 infections in children.
  • Further research into HPIV-4 pathogenesis is warranted.

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