非正式接触会感染HIV吗？

No. HIV isn’t transmitted

• By hugging, shaking hands, sharing toilets, sharing dishes, or closed-mouth or “social” kissing with someone who is HIV-positive.
• Through saliva, tears, or sweat that is not mixed with the blood of an HIV-positive person.
• By mosquitoes, ticks or other blood-sucking insects.
• Through the air.

Only certain body fluids—blood, semen (cum), pre-seminal fluid (pre-cum), rectal fluids, vaginal fluids, and breast milk—from an HIV-infected person can transmit HIV. Most commonly, people get or transmit HIV through sexual behaviors and needle or syringe use. Babies can also get HIV from an HIV-positive mother during pregnancy, birth, or breastfeeding. See How is HIV passed from one person to another?