In the absence of specific treatment, around half of people infected with HIV develop AIDS within ten years. The most common initial conditions that alert to the presence of AIDS are pneumocystis pneumonia (40%), cachexia in the form of HIV wasting syndrome (20%), and esophageal candidiasis.
https://en.wikipedia.org/wiki/AIDS
A person gets HIV when an infected person's body fluids (blood, semen, fluids from the vagina or breast milk) enter his or her bloodstream. The virus can enter the blood through linings in the mouth, anus, or sex organs (the penis and vagina), or through broken skin. Both men and women can spread HIV.
http://www.medicinenet.com/script/main/art.asp?articlekey=42678
Kaposi's sarcoma is the most common cancer occurring in 10 to 20% of people with HIV. The second most common cancer is lymphoma, which is the cause of death of nearly 16% of people with AIDS and is the initial sign of AIDS in 3 to 4%.
https://en.wikipedia.org/wiki/AIDS
Human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS) is a spectrum of conditions caused by infection with the human immunodeficiency virus (HIV). Following initial infection, a person may not notice any symptoms or may experience a brief period of influenza-like illness.
https://en.wikipedia.org/wiki/AIDS
HIV is the cause of the spectrum of disease known as HIV/AIDS. HIV is a retrovirus that primarily infects components of the human immune system such as CD4+ T cells, macrophages and dendritic cells. It directly and indirectly destroys CD4+ T cells.
https://en.wikipedia.org/wiki/AIDS
HIV infection is caused by the human immunodeficiency virus. You can get HIV from contact with infected blood, semen, or vaginal fluids. 1  Most people get the virus by having unprotected sex with someone who has HIV.  Another common way of getting it is by sharing drug needles with someone who is infected with HIV.
http://www.webmd.com/hiv-aids/tc/human-immunodeficiency-virus-hiv-infection-topic-overview
Human immunodeficiency virus, or HIV, is the virus that causes acquired immune deficiency syndrome (AIDS). The virus weakens a person's ability to fight infections and cancer. People with HIV are said to have AIDS when they develop certain infections or cancers or when their CD4 count is less than 200. CD4 (T-cell) count is determined by a blood test in a doctor's office.
http://www.medicinenet.com/script/main/art.asp?articlekey=42678
HIV/AIDS: Causes, Symptoms and Treatments. AIDS (Acquired immune deficiency syndrome or acquired immunodeficiency syndrome) is a syndrome caused by a virus called HIV (Human Immunodeficiency Virus). The illness alters the immune system, making people much more vulnerable to infections and diseases. This susceptibility worsens as the syndrome progresses.
http://www.medicalnewstoday.com/articles/17131.php
HIV infection causes AIDS to develop. However, it is possible to be infected with HIV without developing AIDS. Without treatment, the HIV infection is allowed to progress and eventually it will develop into AIDS in the vast majority of cases.
http://www.medicalnewstoday.com/articles/17131.php
HIV infection is caused by the human immunodeficiency virus. You can get HIV from contact with infected blood, semen, or vaginal fluids. Most people get the virus by having unprotected sex with someone who has HIV.
http://www.webmd.com/hiv-aids/tc/human-immunodeficiency-virus-hiv-infection-topic-overview
what  cause aids
Infection with the human immunodeficiency virus HIV can cause AIDS. HIV is caused by the human immunodeficiency virus.