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The Human Immunodeficiency virus (HIV) is the virus that causes acquired Immunodeficiency syndrome (AIDS) a condition that slowly destroys the body Immune system and makes the body vulnerable to infections. The virus is typically called Human Immunodeficiency virus (HIV) because it destroys the Immune system of the individual which is responsible for protecting the individual from disease. The immunodeficiency associated with, HIV infection can be enormous, and it is the major cause of death, due to the disfucntion of immune system. The problem with AIDS is , sits neurological dementia complex. HIV is a lentivirus, a subgroup of retrovirus. The family of virus is known for lafency, persistent viremia, infection of the nervous system and weak hot immune system. Human Immunodeficiency virus (HIV) is small ultra-microscopic organism that infect living things and uses them to make copies of itself when one’s Immune system is damaged by HIV, AIDS take place (Gallants, 1999).
HIV was first recognized in 1981 in Homosexual men in New York city. In the united states the HIV is now known to have originated from chimpanzees, transmission from chimps to human. Initially, there was wild speculation about what might be the cause of AIDs, but in 1982, the centre for disease control had convincing epidermological evidence that AIDS was caused by a new infectious agents.
Dulbecco et-al (1983, located small quantities of the new virus named Lymphademopalty virus (LAN) but enough to be used an antigenina blood test which showed that AIDS patients were infected with the virus. WHO, (19097), responded that the number of patients living with AIDS has escaculated, a figure of 9000 was confirmed by may 1997. In African AIDs was first responded in 1982. In Nigerian it was first responded in 1986, among commercial sex workers in Lagos and calabar. In 2003 the seroprevalence has been on the increase, despite the comprehensive and successful prevention effort in many part of the would, 4. 1 million new HIV infection was expected to have occurs In 2003 alone, which could have been contributed by an estimated 9,020 to 10,000 infection per day.
Currently, the health problem in Nigerian considering reports from various hospitals particularly, the tertiary hospitals, place AIDS infections in Nigerian at a very serious state. the potential and propensity for widespread is enormous and the debilitating and negative effect n the economy, the population category affected the working class and the dependents which constitute the penultimate individuals to the working class. HIV infections in this direction and orientation should be healed as a national emergency in Nigeria.
Meanwhile, Dr. Robert Gallo’s laboratory begin recovering a virus from AIDS patient, and reported the finding in the science journal. A number of these vinal isolated was introduced together into continuous cell cultures to see if a strain of the virus could replicate in the cells one did replicates and Gallo’s named the virus HILV. III because of the resemblance to two human T-lymphotropic viruses. (Neser, 2001).
By 2004, it was shown that many esymtomatic people was infected with virus and could transmits it and that the epidemic was far more extensive than previously suspected. Blood test was generally available for routine testing to donate blood. Thus markedly improving the safety of blood transfusion and products prepared from pooled blood (peiperls, 1995)

1.1 Hypothesis
H.O: There is significant difference in the result of Westernblots (WB), Enzymes Linked Immuno (Elisa) and Radiommuneoassay kit among HIV carriers.
HI: There is no significant difference in the result of Enzymes linked – immurosorbentassay (Elise), Western blots (WB), and Radommunoasay kit (RIA) among HIV carriers.

To evalulate the current techniques used in the diagnosis of Human Immunodeficiency Virus (HIV).
To help recommend the best and most reliable one essaying HIV

1.3 Statement of problems
The major problem with HIV/AIDs in developing would has been the failure to set realistic priorities with respect to both research and control.
As clinical diagnosis fail to effectively by emphasis on the virus attack is they are increasing case on HIV infection. Some specific techniques are use for the diagnosis of the HIV infection.

1.4 Limitation of the study 
this work is carried out in university of Nigeria Teaching hospital Enugu (UNTH). There is lack of finance in the completion of the project work, lack of the project work, lack of the availability of time also reduce the period of time used.

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