Aids And Its Causes :: Free AIDS Essays

back up and Its Causes1.INTRODUCTIONIn June 1981, the centers for The Disease Control of the coupled Statesreported that five young homosexual men in the Los Angels res publica had contractedPneumocystis Carinii pneumonia( a kind of pneumonia that is particularly foundin AIDS patient). 2 of the patients had died. This report signalled thebegninning of an epidemic of a viral disease characterized by immunosuppressionassociated with opportunistic infection( an infection caused by a microrganismthat does not normally arise disease in human it occurs in persons withabnomality functioning immune system), indirect neoplasms( any abnormal growthof new tissue, benign or malignant) and neurological mainfestation, which has cometo be known as AIDS.Though Aids was beginning(a) discovered in U.S.A, AIDS has been reported frommore than 163 countries around the gentlemans gentleman and an estimated 10 million people be septic worldwide. Worsestill, the pool of HIV- infected persons in Afri ca islarge and expanding.2.RISK GROUP AND MODE OF TRANSMISSIONStudies in the U.S.A. begin retentified five groups of adults at risk fordeveloping AIDS. The case distribution in these groups are as follows (1).Homosexuals or bisexual males constitute the largest group, about 60% of thereported cases. This includes 5% who were intravenuous drug as well. (2).Intravenous drug users with no previous history of homosexuality compose thenext largest group, about 23% of all patients. (3). Hemophiliacs (the people who take over inborn disease characterized by excesssive exhaust and occuring only inmales) especially those who received factor VIII revolve around before 1985, about1% of all patients. (4). Recipents of line of descent and blood components who are nothemophiliacs but who received tranfusions of HIV-infected whole blood components(e.g. platelet, plasma) account for 2 %. (5). Other high risk groups 86% ofpatients acquire disease through heterosexual contacts with members of ot herhigh risk groups. 80% of children with AIDS have a HIV-infected parents andsuffer from transplacental or perinatal transmission.Thus from the anterior discussion, it should be aparent thattransmission of HIV occurs under conditions that facilitate exchange of bloodfluids containing the virus-infected cells. Hence, the trinity major routes oftransmission are sexual contact , parenteral routes( ie adminstration of asubstance not through the digestive system) and the transportation of the virus frominfected mothers to their new borns where are mainly by three routes in thewomb by transplacental spread, during delivery through a infected birth canal,and after birth by ingestion of bureau milk.3. CAUSESIt is little doubt that AIDS is caused by HIV-I, a human display case Cretrovirus ( RNA virus the contains the enzyme, reverse transcriptase , to