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Human herpesvirus-6 infections

C A Jones1, D Isaacs

  • 1Department of Immunology and Infectious Diseases, Royal Alexandra Hospital for Children, Camperdown, Australia.

Archives of Disease in Childhood
|February 1, 1996
PubMed
Summary

Human herpesvirus 6 (HHV-6) causes exanthem subitum and encephalitis. While HHV-6 can reactivate, its role in various diseases remains largely inconclusive, especially in healthy individuals.

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Area of Science:

  • Virology
  • Immunology
  • Infectious Diseases

Background:

  • Human herpesvirus 6 (HHV-6) is a widespread virus, typically acquired in early childhood.
  • HHV-6 is known to cause exanthem subitum (roseola infantum) and, less commonly, encephalitis.
  • As a herpesvirus, HHV-6 can establish latent infections and reactivate under various conditions.

Purpose of the Study:

  • To review the established and potential etiological roles of HHV-6.
  • To assess the diagnostic advancements and their impact on recognizing HHV-6 in disease.
  • To evaluate the evidence for HHV-6's pathological involvement in both immunocompromised and healthy hosts.

Main Methods:

  • Literature review of studies investigating HHV-6.
  • Analysis of diagnostic techniques for HHV-6 detection.
  • Evaluation of evidence linking HHV-6 to various clinical syndromes.

Main Results:

  • HHV-6 is definitively linked to exanthem subitum and encephalitis.
  • Improved diagnostics have increased HHV-6 detection in diverse diseases.
  • Evidence for HHV-6's etiological role is inconclusive for many conditions.
  • Stronger evidence exists for HHV-6's role in immunocompromised individuals compared to the general population.

Conclusions:

  • HHV-6 is a significant human pathogen with established roles in specific syndromes.
  • Further research is needed to clarify the inconclusive associations of HHV-6, particularly in healthy hosts.
  • The pathological significance of HHV-6 in immunocompromised hosts warrants continued investigation.

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