AIDS can be contracted through needles. The main way to transmit AIDS through needles is to share needles or syringes with AIDS patients. When a person with AIDS uses a needle or syringe, the blood of the person with AIDS can be left in the syringe, and the syringe is immediately given to a healthy person, the blood of the person with AIDS in the syringe can enter the body of the healthy person through the needle, thus causing the healthy person to contract AIDS. If you want to avoid contracting AIDS, you should avoid sharing needles or syringes with others, and you should also avoid sharing personal items such as toothbrushes, razors, and shavers. Avoid interventional medical procedures such as tooth extraction, tattooing, eyebrow tattooing, etc. in informal medical settings.