Hepatitis C
The normal way hepatitis C is passed is through contact with blood. Needles, and before 1992 prior to the blood test which became available to test for the virus, transfusions, organ transplants, hemodialysis have all been vehicles for transferring the virus, but I have known people to warn others not to even drink out of the same cup as they are drinking out of, so it could also be passed through saliva. Childbirth, sexual intercourse and accidental needle sticks are also less common causes of transmission. Sharing toiletry items is another way of passing the virus (e.g. razors and nail clippers.)