Aids first appeared in 1959. Its explanation states that its every of a heap of retro viruses and esp. HIV-1 that infect and destroy supporter T cells of the immune system ca development the marked reducing in their numbers that is symptomatic of assist -- called also AIDS virus, human immunodeficiency virus. A retrovirus is any of a group of RNA-containing viruses (as HIV) that train reverse transcriptase by means of which DNA is produced using their RNA as a template and incorporated into the genome of septic cells and that include numerous tumorigenic viruses. During the 2000 yr 5.3 one million million million lot were freshly infected with HIV/AIDS. At the end of the 2000 social class 36.1 million people will be living with HIV/AIDS Where did it sire from? Scientists have different theories near the origin of HIV, but no(prenominal) have been proven. The earliest lie with case of HIV was from a telephone circuit example roll up in 1959 from a man in Kinshasha, Democratic republic of Congo. (How he became infected is not known.) heritable analysis of this blood standard suggests that HIV-1 may have cauline from a ace virus in the late mid-forties or aboriginal 1950s. We do know that the virus has existed in the joined States since at least(prenominal) the mid- to late 1970s.
From 1979-1981 rare types of pneumonia, cancer, and other(a) illnesses were being describe by doctors in Los Angeles and New York among a number of audacious young-begetting(prenominal) patients. These were conditions not usually prepare in people with unchewable immune systems. In 1982 public wellness officials began to use the endpoint acquired immunodeficiency syndrome, or AIDS, to describe the occurrences of opportunistic infections, Kaposis sarcoma, and Pneumocystis carinii pneumonia in previously healthy men. stately tracking (surveillance) of AIDS cases began that year in the United States. The drift of... If you want to get a full essay, assure it on our website: Ordercustompaper.com
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