HIV does not usually survive on blades for more than two hours. HIV is dependent on living cells for its survival, and after leaving the host, it usually does not survive for more than two hours on a dry blade. After further rigorous sterilization, HIV will survive for even less time. However, if blood or other fluids from an AIDS patient are present on the blade, the survival time of HIV may be extended. HIV destroys the body’s immune system, which can lead to complications and, in severe cases, death. The main ways of HIV transmission are mother-to-child transmission, blood transmission, and sexual transmission. Eating, shaking hands or sharing a toilet with an AIDS patient will not cause infection, so there is no need to worry too much. AIDS is a disease that cannot be cured at present. If you have high-risk behaviors, you must go to the hospital in time to block them and avoid infection.