HIV testing is done during pregnancy, and if there is no HIV test during pregnancy, HIV testing is also done at the time of delivery. If the mother has AIDS, she should be alert to whether it can be transmitted to the fetus. AIDS is transmitted by sexual intercourse, vertical transmission from mother to child, and blood transmission, so if the mother has AIDS, the possibility of the embryo having AIDS is very high, so the mother will be tested for infectious diseases such as AIDS, syphilis, hepatitis B and C during pregnancy. If there are infectious diseases, in case of patients with hepatitis B virus, immunoglobulin can be given to the mother during pregnancy to block the fetus from getting hepatitis B. Therefore, tests related to infectious diseases are routinely required during pregnancy. If there is any abnormality, the doctor will deal with the situation symptomatically, so the HIV test will be done at the time of birth.