Sharing needles and other equipment (such as cotton, spoons, and water) used to inject drugs.
Having your ears or another body part pierced, getting a tattoo, or having acupuncture with needles that have not been sterilized properly. The risk of getting hepatitis C in these ways is very low.
Working in a health care environment where you are exposed to fresh blood or where you may be pricked with a used needle. Following standard precautions for health care workers makes this risk very low.