During sexual intercourse, the mucosal linings of the vagina, vagina, penis, rectum or, in very rare cases, this virus enters the body, by mouth. If a person has sexually transmitted disease, then this disease is very easy for those people, because of the ulcer and inflammation due to sexually transmitted diseases, lining of the vagina or penis is damaged.
It has been found in studies that the immune system’s cells, called dendritic cells, are found in mucosa, due to unsafe sex, they start the process of infection. They carry the virus to the lymph node, so that other cells of the immune system can also be infected by it.
HIV also spreads through exposure to infected blood. Such, sharing the injection to take drugs or transmitting infected needle that contains very little amount of blood, spreads by using such injection. Due to blood transfusion, the risk of spreading this disease is very low now because almost every hospital is tested before donating blood and it is checked that the donor who does not suffer from HIV is.
Often, this disease comes from infected mother in children. This virus can also be transmitted to the mother of infected mother’s milk. Therefore, doctors often examine AIDS during pregnancy, so that the disease can be prevented from being transferred to the children.