Essay --

human immunodeficiency virus The introduction of the VirusScientists believe HIV originated from a chimpanzee in westerly Africa. The best approved theory nearly(predicate) the source of HIV is that it is a descendant of a related virus, Simian Immunodeficiency Virus (SIV), which infects monkeys (Perlin, David, and Cohen, Ann, 2002, 79-92).People whitethorn have come in contact with HIV from hunting and take infected animals (Perlin, David, and Cohen, Ann, 2002, 79-92). The earliest known case of infection with HIV in a human was identified in a blood specimen collected in 1959 from a man in Democratic res publica of the Congo. Genetic analysis of this blood sample suggested that HIV-1 may have grow from a single virus in the late 1940s to proterozoic 1950s (The AIDS Institute.org, 2011).Background InformationIn 1982, public health officials began to use the recognise acquired immunodeficiency syndrome or AIDS, to describe the occurrences of opportunistic infections, Kapos is sarcoma, and Pneumocystis jirovecii pneumonia in previously healthy batch. Formal tracking of AIDS cases also began in the linked States In 1982. In 1983, scientists discovered the virus that caused AIDS. The virus was first named HTLV-III/ toilette (human T-cell lymphotropic virus type III/lymphadenopathy associated virus) by an international scientific committee. The name for HIV was later changed to Human Immunodeficiency Virus (The AIDS Institute.org, 2011).There ar two species of the virus, HIV-1 and HIV-2. The first developed from a Simian Immunodeficiency Virus (SIV) name in chimpanzees, whereas the second came from an SIV in a type of monkey called the jet-black mangabey. HIV-1, which is responsible for the majority of AIDS cases worldwide, is divided into three groupsthe main group M, the much rarer gro... ...M), predominantly black men, are most seriously alter by HIV. 1,144,500 wad over the age of 13 are nutriment with HIV, including 15.8 percent who are una ware. Over the past decade, the number of HIV has risen, spell the annual rate of new infections has remained consistent (AIDS.gov, 2012).HIV disease prevails as a serious health issue for parts of the world. Worldwide, there were about 2.5 million new cases of HIV in 2011. Around 34.2 million people are living with HIV around the world. In 2010, there were about 1.8 million deaths in people with AIDS. Nearly 30 million people with AIDS have died worldwide since the epidemic began. Although Sub-Saharan Africa bears the biggest burden of HIV/AIDS, countries such as South and Southeast Asia, Eastern Europe and rally Asia, and parts of Latin America are significantly affected by HIV and AIDS (CDC.gov, 2013).