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The natural history of hepatitis C

Nezam H Afdhal1

  • 1Medical Director, Liver Center, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA. nafdhal@caregroup.harvard.edu

Seminars in Liver Disease
|September 4, 2004
PubMed

Insights

Hepatitis C virus (HCV) infection is a significant global health issue, leading to chronic liver disease and cancer. Most infected individuals do not clear the virus, risking severe liver damage.

Area of Science:

  • Hepatology
  • Virology
  • Epidemiology

Background:

  • Hepatitis C virus (HCV) is a primary cause of chronic liver disease, cirrhosis, and hepatocellular carcinoma (HCC) globally.
  • An estimated 170 million people are infected worldwide, with 1.8% prevalence in the US, disproportionately affecting African Americans and Hispanics.
  • The majority of individuals with anti-HCV antibodies are between 30 and 49 years old.

Purpose of the Study:

  • To review the epidemiology of Hepatitis C virus.
  • To discuss the natural history of Hepatitis C virus infection.

Main Methods:

  • Literature review of epidemiological data.
  • Analysis of natural history and disease progression.

Main Results:

  • HCV transmission has shifted from blood transfusions to intravenous drug use.
  • Only 10-25% of infected adults achieve spontaneous viral clearance; 75% remain chronically infected.
  • Hepatocellular carcinoma or cirrhosis develops in 20-30% of chronically infected patients.

Conclusions:

  • Hepatitis C virus infection represents a major public health challenge due to its high prevalence and potential for severe liver disease.
  • Understanding the epidemiology and natural history is crucial for managing and preventing HCV-related complications.

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