Asked by: Min
Aids, disease, infection, people, virus
Help me to write my biology essay on AIDS
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Jennifer on Mar 29, 2011
To write my biology essay on ‘AIDS’, I need to know what is AIDS and the causes of this disease. AIDS or Acquired immune deficiency syndrome or acquired immunodeficiency syndrome is a disease caused by HIV virus. HIV is a virus that gradually attacks immune system cells. As HIV progressively damages these cells, the body becomes more vulnerable to infections, which it will have difficulty in fighting off. It is at the point of very advanced HIV infection that a person is said to have AIDS. Genetic research indicates that HIV originated in west-central Africa during the late nineteenth or early twentieth century. AIDS was first recognized by the U.S. Centers for Disease Control and Prevention in 1981 and its cause, HIV, identified in the early 1980s.According to UNAIDS 2009 report, worldwide some 60 million people have been infected, with some 25 million deaths, and 14 million orphaned children in southern Africa alone since the epidemic began.
Treatments for AIDS and HIV can slow the course of the disease, there is no known cure or vaccine. Antiretroviral treatment reduces both the mortality and the morbidity of HIV infection, but these drugs are expensive that its medication is not available in all countries.
The treatment is unable to cure the disease so the best way is to take precaution to prevent the disease. The virus can spread through sexual contacts, blood transfusion or sharing of the needles from infected, a pregnant woman can transmit the virus to her fetus through their shared blood circulation, or a nursing mother can transmit it to her baby in her breast milk. Aids can also spread through accidental needle injury, artificial insemination with infected donated semen, and organ transplantation with infected organs. AIDS begins with HIV infection. People infected with HIV may have no symptoms for 10 years or longer, but they can still transmit the infection to others during this symptom-free period. If the infection is not detected and treated, the immune system gradually weakens and AIDS develops.
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