HIV is believed to be originated in other primates in the Twentieth Century. Scientists have identified a type of West African chimpanzee as the original source of the virus. Researchers believe that the chimpanzee version of the virus called SIV was transmitted to humans and mutated into HIV. Hunters would become exposed to infected blood of the chimpanzees when they hunted them for meat. Since then HIV spread to a larger portion of the human population once Africa became less isolated.
HIV attacks the body’s immune system. This virus destroys helper T-cells called CD4 cells and uses them to make copies of itself. These CD4 cells are white blood cells, which help the body fight off diseases. HIV weakens the immune system and makes people much more susceptible to infections and diseases. Many people who are infected with HIV do not have any symptoms. Symptoms do not usually develop until the immune system has been significantly weakened and symptoms are generally related to infections and cancers a person gets due to a damaged immune system. HIV has three stages: acute infection, clinical latency, and AIDS.
The first stage of HIV is acute infection. Acute infection usually begins within two to four weeks of HIV infection. During this period people experience flu-like symptoms and ...
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...S and lowered the risks of transmission.
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- HIV is known as the Human immunodeficiency virus. The virus was recognized in a chimpanzee by scientists in Africa. They believe that it is the same cause of HIV infections found in humans. The type of infection found in chimpanzees is called the simian immunodeficiency virus that was spread to humans and also mutated into HIV. There was a time when human hunted chimpanzee for meat and was in contact with their blood that is infected. In past studies it showed that HIV have showed up in apes and humans in the late 1800s.... [tags: AIDS, HIV, Immune system, Immunodeficiency]
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