The virus then enters a person's blood stream through their rectum vagina or penis. If you have been faithful for at least five years and your partner has been faithful too, neither of you is at risk. Mother can infect newborn. AIDS affects certain groups of the population. Sexual partners of these high risk individuals are at risk, as well as any children born to women who carry the virus.
Heterosexual persons are increasingly at risk.
Donating blood is not risky at all. You cannot get AIDS by donating blood. High risk persons and every blood donation is now tested for the presence of antibodies to the AIDS virus. Blood that shows exposure to the AIDS virus by the presence of antibodies is not used either for transfusion or for the manufacture of blood products. Blood banks are as safe as current technology can make them.