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Hepatitis E: prevention and treatment.

Kenrad E Nelson1, Christopher D Heaney, Alain B Labrique

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Current Opinion in Infectious Diseases
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Summary
This summary is machine-generated.

Hepatitis E virus (HEV) infection is a global concern with varying epidemiology. While a vaccine shows efficacy, limited prevention and treatment options are widely available, highlighting a significant public health challenge.

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Area of Science:

  • Hepatology and Viral Gastroenterology
  • Global Public Health
  • Infectious Diseases Epidemiology

Background:

  • Hepatitis E virus (HEV) infection is globally prevalent, with distinct epidemiological patterns, genotypes, and transmission routes in resource-limited versus developed nations.
  • While seroprevalence of HEV immunoglobulin G ranges from 5-50%, acute HEV hepatitis is less commonly diagnosed in Western countries, though chronic infections occur in immunocompromised individuals.
  • HEV infection presents with extrahepatic manifestations and continues to cause large-scale epidemics in Asia and Africa.

Purpose of the Study:

  • To review the current understanding of Hepatitis E virus (HEV) epidemiology, genotypes, and transmission.
  • To discuss the challenges and advancements in prevention and treatment strategies for HEV infection globally.
  • To highlight the public health implications of HEV, particularly in diverse geographical and socioeconomic contexts.

Main Methods:

  • Systematic review of global literature on HEV epidemiology, clinical presentation, and treatment outcomes.
  • Analysis of data on seroprevalence, diagnostic challenges, and treatment efficacy of antiviral agents like ribavirin and interferon-α.
  • Evaluation of vaccine efficacy data from clinical trials and its availability.

Main Results:

  • HEV infection epidemiology and transmission vary significantly between low-resource and developed countries.
  • Chronic HEV infections are recognized in immunocompromised patients, with successful treatment reported using ribavirin or interferon-α.
  • A subunit peptide HEV vaccine demonstrated high efficacy in a clinical trial but is only available in China and not yet evaluated in all risk groups.

Conclusions:

  • HEV infection is a growing global health issue with a need for widely accessible prevention and treatment methods.
  • Differences in HEV epidemiology necessitate tailored prevention and treatment strategies for different regions.
  • Further research and broader implementation of effective interventions, including vaccine accessibility, are crucial for controlling HEV.