Sunday, April 12, 2015

Epidemiology

How prevalent is the Hepatitis C Virus around the world?
Hepatitis C Virus (HCV) affects people around the globe. About 130-170 million people in the world are infected with HCV. Most individuals who are infected with chronic HCV are unaware of their infection. Here are some global HCV statistics:
  • The World Health Organization estimates over 170 million people are chronic carrier of HCV and that globally about 3% have been infected with HCV
  • Egypt has the highest known prevalence of individuals infected with HCV at over 10% of the population. Egypt also has a high rate of chronic liver disease, liver cancer, and cirrhosis. 
  • In the United States, up to 2-4 million people may be chronically infected with HCV
  • In Europe 5-10 million people may be chronically infected with HCV
  • In India, about 12 million people may be chronically infected with HCV
  • In the U.S. and Western Europe, about 150,000 new cases of HCV occur annually
  • In Japan, about 350,000 new cases occur annually
Of the new cases of HCV diagnosed each year, only about a quarter of them are symptomatic but 60-80% may ultimately develop chronic liver disease. The mortality rate of those diagnosed each year is around 5-7%.

This map shows the prevalence of individuals chronically infected with the Hepatitis C Virus.



This graph depicts the number of acute Hepatitis C Virus infections in the United States between 1992 and 2009.

Watch this video to learn more about who has HCV around the world and how it is primarily spread from person to person:


References:
1. Chapter 3 Infectious Diseases Related To Travel. (n.d.). Retrieved April 12, 2015, from http://wwwnc.cdc.gov/travel/yellowbook/2014/chapter-3-infectious-diseases-related-to-travel/hepatitis-c
2. Clinical Infectious Diseases. (n.d.). Retrieved April 12, 2015, from http://cid.oxfordjournals.org/content/55/suppl_1/S3/F1.expansion.html
3. Hepatitis C. (n.d.). Retrieved April 12, 2015, from http://www.who.int/csr/disease/hepatitis/whocdscsrlyo2003/en/index8.html#94


1 comment:

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