Final answer:
Hepatitis C is mainly transmitted through contaminated blood, commonly associated with intravenous drug use or transfusions, and can lead to chronic infection in the majority of cases.
Step-by-step explanation:
The most common means of transmission for hepatitis C virus (HCV) is through contact with infected blood. This is often associated with intravenous drug use or exposure to blood through activities such as transfusions. HCV can also be transmitted through the sharing of contaminated personal items like toothbrushes and razors. The virus has a mean incubation period of 45 days, and while some cases are asymptomatic or resolve spontaneously, approximately 75%-85% of infected individuals become chronic carriers.