AIDS, acquired immune deficiency syndrome that is because humans infected with the human immunodeficiency virus that causes immune deficiency after the defect, complicated series of opportunistic infections and tumors, severe cases can result in death syndrome. HIV-infected people and AIDS patients are the only source of infection of this disease. Mainly in HIV infection and the patient''s blood, semen, vaginal secretions, breast milk, the main route of transmission are: sex: with an infected partner unprotected sex, including homosexual, heterosexual and bisexual contact.②Intravenous drug users. ③MTCT intravenous drug use.④blood and blood products (including artificial insemination, skin grafts and organ transplants). Shaking hands, hugging, kissing courtesy, eat and drink, shared toilets and bathrooms, shared offices, public transport, recreational facilities and other daily contact does not spread HIV.
