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Hepatitis C
1World Health Organization, Communicable Diseases Surveillance and Response, Geneva, Switzerland. lavanchyd@who.int
Insights
Hepatitis C virus (HCV) is a leading cause of post-transfusion hepatitis globally. Understanding infection sources is crucial for effective prevention and treatment strategies worldwide.
Area of Science:
- Hepatology
- Infectious Diseases
- Public Health
Background:
- Hepatitis C virus (HCV) is the primary cause of post-transfusion hepatitis globally, representing about 90% in Japan, the US, and Western Europe.
- HCV infection poses a significant global public health challenge due to ongoing new infections and severe long-term consequences like chronic liver disease.
Purpose of the Study:
- To highlight the global burden of Hepatitis C.
- To emphasize the need for population-based epidemiological studies to define infection sources.
- To advocate for national public health plans for HCV prevention and treatment.
Main Methods:
- This abstract does not detail specific methods but discusses the necessity of epidemiological studies.
- It reviews known transmission routes of Hepatitis C virus.
Main Results:
- Hepatitis C is the most common cause of post-transfusion hepatitis worldwide.
- Multiple transmission routes exist, including blood transfusions, contaminated medical/dental/traditional instruments, sexual contact, and mother-to-infant transmission.
Conclusions:
- Defining the relative contribution of various HCV infection sources through epidemiological studies is essential for targeted prevention.
- Countries need comprehensive public health strategies to prevent new infections and treat existing chronic Hepatitis C cases.
- Effective HCV control requires national-level planning, regardless of economic status, to mitigate morbidity and mortality.
Abstract:
Hepatitis C has been identified as the most common cause of post-transfusion hepatitis worldwide, accounting for approximately 90% of this disease in Japan, the United States and Western Europe. Hepatitis C is a major global public health problem. New infections continue to occur, and the source of infection includes transfusion of blood or blood products from unscreened donors; transfusion of blood products that have not undergone viral inactivation; parenteral exposure to blood through use of contaminated and inadequately sterilized instruments and needles used in medical, dental and 'traditional' medicine; procedures such as hemodialysis; high risk sexual practices; household or sexual contacts of hepatitis C virus (HCV)-infected persons; and infants of HCV-infected mothers. In many countries, the relative contribution of the various sources of infection has not been defined with population-based epidemiological studies. Such studies are necessary to enable countries to prioritize their preventive measures and to make the most appropriate use of available resources. Given the substantial morbidity and mortality attributable to HCV-related chronic liver disease, each country, irrespective of economic status, should develop a plan of HCV-related public health activities for the prevention of new HCV infections and the treatment of established chronic infections.