Aids

An acquired defect of cellular immunity associated with infection by the human immunodeficiency virus (HIV), a CD4-positive T-lymphocyte count under 200 cells/micro liters or less than 14% of total lymphocytes, and increased susceptibility to opportunistic infections and malignant neoplasm’s. Clinical manifestations also include emaciation (wasting) and dementia. These elements reflect criteria for AIDS as defined by the CDC in 1993.

(Aids) Acquired Immune Deficiency Syndrome

Acquired immune deficiency syndrome or acquired immunodeficiency syndrome (AIDS) is caused by an infection with the human immunodeficiency virus (HIV).
AIDS is now a pandemic. As of 2009, AVERT estimated that there are 33.3 million people worldwide living with HIV/AIDS, with approximately 2.6 million new HIV infections per year and 1.8 million annual deaths due to AIDS. In 2007, UNAIDS estimated: 33.2 million people worldwide had AIDS that year; AIDS killed 2.1 million people in the course of that year, including 330,000 children, and 76% of those deaths occurred in sub-Saharan Africa. According to UNAIDS 2009 report, worldwide some 60 million people have been infected, with some 25 million deaths, and 14 million orphaned children in southern Africa alone since the epidemic began

In excess of time, HIV infection destroys the helper T cells of the body's resistant system, resulting in a critical fall of the resistant system and the ability of the body to fight infection. Advanced HIV infection is called AIDS.
AIDS is frequently a sexually transmitted disease. HIV which causes AIDS is most often passed from one person another during sexual contact that involves vaginal, oral, or anal sex. HIV can also be passed to another person through other means, such as through contact with blood or body fluids. This can occur through such processes as blood transfusions or sharing needles contaminated with HIV.