Vacuum or suction aspiration uses aspiration to remove the contents of the uterus through the cervix. It is a method of induced abortion as well as a therapeutic procedure used after miscarriage. The rate of infection is lower than any other surgical abortion procedure at 0.5%. Some sources may use the terms dilation and evacuation or "suction" dilation and curettage to refer to vacuum aspiration, although those terms are normally used to refer to distinct procedures.