Epstein-Barr virus-associated infectious mononucleosis in Chinese children

Chun Wing Chan1, Alan Kwok Shing Chiang, Kwok Hung Chan

  • 1Department of Pediatrics and Adolescent Medicine, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong SAR, PR China.

Insights

Epstein-Barr virus (EBV)-associated infectious mononucleosis (IM) is common in Hong Kong children, peaking between 2-4 years. While generally mild, hepatitis risk increases with age in childhood IM patients.

Area of Science:

  • Pediatric Infectious Diseases
  • Virology
  • Immunology

Background:

  • Epstein-Barr virus (EBV) infection is highly prevalent in Hong Kong children before age 10.
  • Clinical characteristics and complications of EBV-associated infectious mononucleosis (IM) in Chinese children remain underreported.
  • Understanding age-related differences in childhood IM is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To define the clinical presentation and complications of EBV-associated IM in Chinese children.
  • To investigate the relationship between age and the clinical features of childhood IM.

Main Methods:

  • Retrospective study of 77 Chinese children diagnosed with primary EBV infection (IM).
  • Patients were categorized into four age groups: <2, 2-4, 5-9, and 10-15 years.
  • Evaluation of clinical, hematologic, and biochemical findings across different age groups.

Main Results:

  • EBV-associated IM occurred across all studied age groups, with peak incidence in children aged 2-4 years.
  • Common symptoms included fever, tonsillopharyngitis, lymphadenopathy, and hepatosplenomegaly, similar to adult IM.
  • Hepatitis occurrence showed a significant association with increasing age (P=0.003).

Conclusions:

  • Childhood EBV-associated IM in Hong Kong Chinese children is common, presenting similarly to adults but with age-related variations in complications.
  • Marked lymphocytosis with atypical lymphocytes is a consistent hematologic finding.
  • The increased incidence of hepatitis with advancing age suggests age-dependent host immune responses to EBV.
Abstract

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