context: AIDS [1], AIDS or division [2] (sculpting HIV syndrome) [2] or acquired immunodeficiency syndrome (English: AIDS; in French: SIDA) is a disease that affects the human immune system and is caused by virus Human immunodeficiency, HIV virus, and infection in this pathology gradually reduces the effectiveness of the human immune system, leaving the infected person vulnerable to opportunistic infections and tumors. The HIV virus is transmitted to the infected person through a direct connection between the mucous membrane or bloodstream and a bodily fluid containing this virus such as: blood or a man’s semen, a female’s vaginal fluid, aneurysm, or breastfeeding milk. [3] [4] Hence, this virus can be transmitted through unprotected sexual intercourse [5], whether anal, vaginal or oral, or through a blood transfusion process, or through injection needles contaminated with this virus, or it can be transmitted from the mother to her fetus during a stage Pregnancy, childbirth, breastfeeding, or through any other exposure to any of the aforementioned physical fluids. AIDS is now considered a pandemic (an epidemic and outbreak). In 2007, an estimated 33.2 million people were living with the disease worldwide. Also, this disease has claimed the lives of an estimated 2.1 million people, including 330,000 children. It was found that more than three quarters of these deaths occurred in that sub-Saharan part of the African continent. This impedes the achievement of economic growth and destroys human capital.
question: What is the cause of AIDS?
answers.text: virus