What Is Hepatitis C?
Hepatitis C is a serious and often-silent liver infection caused by the hepatitis C virus. It is one of five main types of hepatitis (the other four are hepatitis A, B, and the less-common D and E). Hepatitis C is transmitted when an infected person’s blood enters a healthy person’s bloodstream, for example, via contaminated needles (including unsterilized tattoo needles), accidental needlesticks in healthcare workers, and less often, unprotected sex.
Roughly 17,000 new cases occur in the U.S. each year.
http://www.health.com/hepatitis-c
