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Published on: June 26, 2020
Enterically transmitted hepatitis. Hepatitis A and E viruses.
1Clinical Microbiology Laboratory, Fletcher Allen Health Care, Burlington, Vermont, USA. washington.winn@vtmednet.org
Clinics in Laboratory Medicine
|November 5, 1999
Summary
Hepatitis A and E viruses cause enterically-transmitted hepatitis, primarily through contaminated water and food. Hepatitis A is global, while Hepatitis E is more common in developing nations, with differing impacts across age groups.
Area of Science:
- Hepatology
- Infectious Diseases
- Public Health
Background:
- Enterically-transmitted hepatitis is a significant global health concern.
- Hepatitis A virus (HAV) and Hepatitis E virus (HEV) are the primary causative agents.
- Transmission occurs through contaminated water and food vehicles.
Purpose of the Study:
- To summarize the epidemiology and characteristics of enterically-transmitted hepatitis.
- To differentiate the global distribution and disease patterns of HAV and HEV.
Main Methods:
- Review of existing literature on hepatitis A and E.
- Analysis of epidemiological data regarding viral distribution and transmission.
Main Results:
- Hepatitis A virus is globally distributed, affecting all ages, with milder childhood infections and long-lasting immunity.
- Hepatitis E virus is prevalent in developing countries, with a higher tendency for symptomatic infections in children.
- Severe disease from HAV typically affects non-immune adults.
Conclusions:
- HAV and HEV represent distinct public health challenges with differing geographical and demographic impacts.
- Understanding transmission routes is crucial for effective prevention strategies.
- Targeted interventions may be necessary based on the specific etiological agent and local epidemiology.
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