Causes of AIDS

AIDS and causes behind it.

HIV that is human immunodeficiency virus is responsible for causing AIDS that is Acquired Immune Deficiency syndrome. HIV weakens the ability of person to fight against the infections, diseases including cancer. Detection of AIDS depends on the amount of CD4 count. When the HIV infected person counts their CD4 fewer than 200 it means that the person is having AIDS.

Having HIV infection doesn't mean that you have AIDS. The infected person may take many years to develop AIDS. The virus is passed from one person to another through blood-to-blood, using instruments like needles, sexual transaction and through mother to baby.

White blood cells present in our body works as fighter that attacks and destroys foreign organisms, which enters in your body. These cells are known as CD4 lymphocytes and are the main target of HIV. The virus takes help of the protein layer present on these CD4 to enter the cell. After entering the cell the virus inserts its own genetic material into the cell to make copy of it.

The copied virus breaks out of the host cell and take entry into bloodstream to search another cell for attack. In between this process some infected CD4 cells and host cells die affecting by the virus repeating the process again and again. Meanwhile the billion of new HIV produces every day decreasing the number of CD4 cells. The process leads to severe immune deficiency in which the body is not remains in condition to fight with bacteria and virus causing disease.

There are some worldwide facts about AIDS such as:

According to CDC (center for disease care and prevention) there are about 1,185,000 people in US with HIV and AIDS in which 25% people are unaware about their disease. It is guessed that there are about 42,000 people who get infection by HIV each year. Unprotected sex and sharing of needles is the common way to get HIV infection but except this transmission of blood to blood, semen, fluid and breast milk are the other factors to get HIV infection. HIV can spread by both men and women.