HIV is the abbreviation of Human immunodeficiency virus, a dangerous incurable viral disease that affects the human immune system, and AIDS (Acquired Immunodeficiency Syndrome) is the last and deadliest stage of HIV infection. The main causes of HIV AIDS (HIV kaise hota hai in Hindi) are given below- 1. The main cause of AIDS is HIV 2. sexual intercourse with an infected person 3. all kinds of contact with the infected person's blood