AIDS is an infectious disease that can be transmitted to other people in a number of ways, mainly through blood and sexual transmission, as well as from mother to child. The blood route is mainly due to occupational exposure. If the blood of a person with AIDS comes into contact with the broken skin of another person, the probability of transmission is about 0.3%. If it comes into contact with someone’s mucous membranes, the probability is about 0.09%. In heterosexual sex, the probability of HIV transmission from one sexual act is about 0.1%. As for the mother-to-child transmission route, the probability of transmitting to a child during childbirth without any protection is 25-35%. If you are not infected at that point, but breastfeed, the probability of transmission to the child can be as high as 75%.