Sharing tattoo or body-piercing equipment are two activities that put you at high risk for getting HIV or Hepatitis C. The needles, equipment and ink can be contaminated with blood that contains HIV or Hepatitis C virus that can be passed into your blood stream.
Thereof, can an infected blade cause HIV?
10) What is the risk of transmitting HIV through sharing razors with an infected person? Any kind of cut using an unsterilized object, such as a razor or knife, can transmit HIV. Sharing razors is not advisable unless they are fully sterilized after each use.