In 1981, homosexual men with indication of a disease that now are considered typical of the acquired syndrome HIV (AIDS) were first described in AMERICA. The men had an unusual type of lung infection (pneumonia) called Pneumocystis carinii (known as Pneumocystis jiroveci) pneumonia and rare skin tumors called Kaposi's sarcoma. The patients were noted to have a chronic reduction of a type of cell in the blood that is an important part of the immune system, called CD4 cells. These cells, often referred to as T cells, help the body fight infections. Shortly these after, this disease was recognized all over the U,S, and Western Europe, In 1982, researchers in the United States described the virus that causes HIV AIDS, known by the human immunodeficiency virus (HIV) aids and belonging to the group which called retroviruses. In 1985, a blood test avail that measures antibodies to HIV aids that are the body's immune response to the HIV AIDS. These blood test remains the best method for find out HIV infection. Recently, tests have available to look for these antibodies in the saliva and urine, and some can provide results with 25 minutes testing.
Friday, May 22, 2009
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