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According to various Scientists reports it is identified that a type of chimpanzee in West Africa was the source of HIV infection in humans. This virus was called as simian immunodeficiency virus or SIV. The SIV was mutated into HIV when humans hunted these chimpanzees for meat and came into contact with their infected blood. With time, this virus slowly spread across Africa and later reached the other parts of the world.
When a blood sample was collected from a man in Kinshasa,Congo in the year 1959, the first HIV-1 virus was detected. It is still unknown how he became infected.
The term "acquired immunodeficiency syndrome," or AIDS was first used in 1982 by public health officials of USA. In the following year, scientists discovered the virus that causes AIDS and named it HTLV-III/LAV (human T-cell lymphotropic virus-type III/lymphadenopathy-associated virus). This name was later changed to HIV (human immunodeficiency virus).
AIDS was first recognized by the U. S. Centers for Disease Control and Prevention in 1981 and its cause, HIV, identified in the early 1980sCheck Answer
Insects cannot transmit HIV. When taking blood from someone mosquitoes do not inject blood from any previous person. The only thing that a mosquito injects is saliva, which acts as a lubricant and enables it to feed more efficiently.Check Answer
The SIV virus found in chimpanzees is very close to HIV. It is believed that the virus crossed species to humans.Check Answer
The more CD4 cells there are in a person's blood, the stronger the immune system. A CD4 cell count below 350 indicates that the person has a weak immune system and requires antiretroviral therapy.Check Answer
World AIDS Day is held on 1 December each year and is an opportunity for people worldwide to unite in the fight against HIV. It was the first ever global health day and the first one was held in 1988. Since 1995, the President of the United States has made an official proclamation on World AIDS Day.Check Answer