People often ask: Doctor, although I had a blood transfusion and was infected with hepatitis C virus, but my liver function is normal, why do I still need antiviral treatment? Viral hepatitis C, or hepatitis C for short, is caused by infection with the viral hepatitis C virus (HCV), which is infectious and can be very harmful to the human body. With standard antiviral treatment, long-term survival and quality of life can be improved, and a significant number of patients can be cured. Hepatitis C is a “silent disease” that is often overlooked by patients. About 1/3 of people infected with HCV have normal liver function at all times. They used to be called “asymptomatic hepatitis C carriers,” but now it is believed that some of them can still develop cirrhosis or even liver cancer. Since this group of patients with normal liver function can also be treated with antiviral therapy with satisfactory results, antiviral therapy should also be given to this group of patients with normal liver function. Since hepatitis C with normal liver function is also harmful and can be treated, how do you find out early if you are infected with hepatitis C? To answer this question, we have to start with the transmission routes of hepatitis C. The main transmission routes of hepatitis C include: blood transmission, sexual transmission, mother-to-child transmission, medical transmission and other daily life transmission. After understanding the transmission route of hepatitis C, we can basically determine which people are at high risk of hepatitis C. They mainly include the following groups of people: (1) commercial blood donors, especially those who repeatedly donate blood or have a history of single-collection plasma; (2) people who have had transfusions of blood and blood products; (3) intravenous drug addicts; (4) people who have had sex with people infected with hepatitis C; (5) hemodialysis patients; (6) other people who have (6) Other people: people who have had dental procedures, intramuscular or transvenous injections, acupuncture, ear piercing, tattooing and cosmetology, pedicure, etc. in places with poor sterilization, and health care workers who have had accidental stab wounds. If they belong to the above high-risk groups should be given high priority and should go to a regular hospital for hepatitis C screening for anti-HCV and HCVRNA tests as soon as possible. As long as the HCVRNA positive means that has been infected with HCV, and the body has virus replication, need anti-HCV treatment.