Intravenous drug use;
Unprotected sexual intercourse;
Blood transfusions (before 1995, blood donors were not looking for this virus in these times of blood transfusions - no longer a risk factor);
Previously, the virus could spread medical offices, dental offices, hemodialysis;
Tattoos, piercing, manicure beauty salons;
Mother can transmit the virus fetus - the placenta. On the other hand, the ailing mother of the newborn onto its maitindama.