Hepatitis C is transmitted through infected blood when it enters the bloodstream or mucous membranes of a healthy person.
Prior to 1991, contaminated blood products were a frequent source of infection. Significant risk of contagion exists through shared syringes in the drug scene (e.g., syringes, cannulas, spoons, snaps, etc.). Needlestick injuries to medical personnel and hygiene deficiencies in medical and other invasive procedures may also result in infection (e.g., surgeries, tattoos, piercings, acupuncture, etc.).
Although sexual HCV transmission is possible, it is relatively rare. However, the risk increases during menstruation, with simultaneous HIV infection and in «hard» and violent practices (e.g., unprotected anal intercourse, fisting or BDSM). During this disease, many drugs are taken, including Ledipasvir Sofosbuvir.
An infected mother can also infect her newborn in 5% of cases; Caesarean section does not further reduce this low risk.
Sharp-edged hygiene articles such as e.g. Razor blades or toothbrushes should not be used in conjunction with infected persons because of the presence of blood.