HCV is a contagious liver disease that results from infection with the hepatitis C virus. The virus is spread when blood from an infected person enters the body of another. It is among the most common viruses that infect the liver. Hepatitis C can be transmitted via sex with an infected person, or sharing of items contaminated with infectious blood. Hepatitis C is not spread through breast milk, water or food, or by casual contact such as kissing and sharing food or drinks with an infected person.