If a person is scratched by an AIDS patient and bleeds, he or she will not generally be infected with AIDS because AIDS is a blood-borne disease, and the nails, skin, palms and other parts of an AIDS patient generally do not contain the virus. Even if the patient scratches a healthy person and causes bleeding, no virus enters the healthy person’s body through the wound. Unless the AIDS patient’s own hand bleeds in the process of scratching a healthy person, and the AIDS patient’s blood enters the healthy person’s body through the healthy person’s wound, in this case there is a possibility of AIDS infection. Even if this happens, there is a way to remedy the situation by taking AIDS blocking drugs as soon as possible within 2h. The virus can be blocked through a 28-day cycle to prevent the healthy person from getting infected.