[Acute viral hepatitis--present status and perspectives]

Area of Science:

• Hepatology
• Virology
• Epidemiology

Context:

• Hepatitis A, B, C, D, and E represent significant global health concerns.
• Understanding the distinct epidemiological and clinical features of each hepatitis virus is crucial for effective management.
• Recent advancements provide new insights into viral hepatitis pathogenesis and treatment strategies.

Purpose:

• To review current knowledge on the epidemiology, virology, and clinical manifestations of viral hepatitis.
• To differentiate between acute and chronic hepatitis forms, particularly for hepatitis B, C, and D.
• To highlight the distinct characteristics of non-A, non-B hepatitis, including hepatitis C and E.

Summary:

• Hepatitis A and E viruses do not cause chronic infections. Hepatitis B and D can lead to chronic disease.
• Hepatitis C virus (HCV) is a major cause of chronic hepatitis, cirrhosis, and hepatocellular carcinoma, often detected by anti-HCV antibodies.
• Hepatitis E virus (HEV) is prevalent in developing nations, does not cause chronicity, but can lead to severe outcomes in pregnant women.
• No routine serological tests exist for Hepatitis E, and no specific treatment for acute viral hepatitis is available.

Impact:

• The development of vaccines for hepatitis A, E, and C is on the horizon, promising future prevention strategies.
• Distinguishing between different hepatitis viruses is essential for prognosis and guiding potential therapeutic interventions.
• This review underscores the need for continued research into effective treatments and preventative measures for viral hepatitis.