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Acquired immune deficiency syndrome, or AIDS, is caused by infection with the human immunodeficiency virus (HIV), which attacks cells in the immune system and results in functional defects. These defects may not be apparent for years. However, they lead to a severe suppression of the immune system's ability to resist harmful organisms. This leaves the body open to invasion by various infections, which are called opportunistic diseases, and to the development of unusual cancers. The virus also tends to reach certain brain cells, leading to so-called neuropsychiatric abnormalities, or psychological disturbances which are caused by physical damage to nerve cells. From the first reports AIDS in 1981, through mid-1994 more than 402,000 AIDS cases and more than 241,000 deaths have been reported in the United States alone. This is only the tip of the iceberg of HIV infection, however. It is estimated that nearly 1 million Americans have been infected with the virus through !the mid-1990s but have not yet developed clinical symptoms. In addition, although the vast majority of documented cases have occurred in the United States, AIDS cases have also been reported in almost every country in the world. Sub-Saharan Africa in par
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Some common words found in the essay are:
HIV Blood-cell, AIDS AIDS, Health Service, ARC HIV, Yearly AZT, DDI AZT, HIV RNA, , HIV Research, Disease KS, hiv infection, hiv infection aids, infection aids, aids patients, opportunistic infections, blood cells, t4 cell, percent aids, infected hiv, united aids, opportunistic diseases, blood cells called, al eds aids, human immunodeficiency virus, et al eds,
Approximate Word count = 3242
Approximate Pages = 13 (250 words per page double spaced)
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