How do you prevent aids?
use protection the right way (condom has to fit right not bigger or smaller and it should go on easilily,if not it's on backwards GET A NEW ONE it should go on easily), if a friend is bleeding use gloves, (your nails usually have cuts somewhere and blood seps into thoose wounds) aids can also be spread by blood, dont share needles
one of the main ways is to NOT HAVE SEX!!! but any ways you shouldnt share anything like needles or anything like that, or dont do anything with other people's blood.
Aids can generally be prevented by wearing protection during sex, and trying to not get the bodily fluids from an infected person in your own body.