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The epidemiology of hepatitis C virus infection
Tommy Yen1, Emmet B Keeffe, Aijaz Ahmed
1Division of General Internal Medicine and Geriatrics, VA San Diego Hepatitis C Clinic, Veteran's Adminstration Medical Center, and University of California, San Diego School of Medicine, San Diego, California, USA.
Insights
Hepatitis C virus (HCV) infection prevalence varies widely. Key risk factors like injection drug use and blood transfusions predict HCV transmission across diverse populations.
Area of Science:
- Hepatology and Infectious Diseases
- Epidemiology of Viral Infections
Background:
- Hepatitis C virus (HCV) infection presents a significant global health challenge.
- Prevalence rates for HCV vary dramatically across different demographic and risk groups.
Purpose of the Study:
- To review existing literature on the incidence and prevalence of HCV infection.
- To examine the evidence supporting various transmission routes of HCV.
Main Methods:
- Comprehensive literature review of studies on HCV prevalence and incidence.
- Analysis of risk factors associated with HCV transmission.
Main Results:
- HCV prevalence ranges from 0.6% in blood donors to 80% in injection drug users.
- Identified risk factors include injection drug use, blood product transfusion, organ transplantation, hemodialysis, occupational exposure, sexual contact, and vertical transmission.
Conclusions:
- Population-specific HCV prevalence is strongly linked to identifiable risk factors.
- Understanding transmission modes is crucial for targeted prevention and control strategies.
Abstract:
The prevalence of hepatitis C virus (HCV) infection varies in different populations, ranging from as low as 0.6% in volunteer blood donors to as high as 80% in injection drug users. The prevalence of HCV in a population can be predicted by risk factors associated with the transmission of infection. These risk factors include injection drug use, blood product transfusion, organ transplantation, hemodialysis, occupational injury, sexual transmission, and vertical transmission. We review the literature regarding the incidence and prevalence of HCV infection and the evidence supporting various modes of HCV transmission.