What is the mode of transmission of AIDS ?

AIDS: AIDS or acquired immunodeficiency disorder is caused by the human immunodeficiency virus that immunologically disarms a patient.

The mode of transmission of AIDS is as follows:

1. AIDS is transmitted through unprotected sex with the infected person.
2. AIDS is transmitted through sharing needles, and syringes with the infected person.
3. AIDS is transmitted through the mother and her womb.
4. AIDS is transmitted through the transfusion of blood from an infected person.