HIV AIDS is caused by the Human Immunodeficiency Virus (HIV). This disease has started spreading among humans in large numbers in the late 19th century and the start of 20th century. This disease affects the immune system and makes a person vulnerable and weak to all kinds of infections. A HIV test can help know your HIV status and help you fight the virus effectively.
Types of HIV
There are tow types of HIV inexistence – HIV 1 and HIV 2. HIV 1 is found to be more common and has infected millions of people worldwide. HIV 2 is generally found restricted to some areas of the world. It is not yet been found to be existent outside its source area.
Simian Immunodeficiency Virus
The Simian Immunodeficiency Virus are retroviruses that can infect many non human animals. This disease is very commonly found in the apes and monkeys of Africa. By a special HIV test, it has been found that this simian immunodeficiency virus has been present in the monkeys and apes for at least 32,000 years or even many years before that. A HIV test was done for many monkeys of West Africa. The result was found positive and the monkeys had AIDS due to infection by the Simian Immunodeficiency Virus.
HIV in Humans
This Simian Immunodeficiency Virus of the monkeys and apes of the West Central African forests has many similarities to HIV virus of the humans. The strains of these the SIV virus from these monkeys were subjected to a HIV test. The strains of HIV 1 in humans were found to be very similar to that of the SIV virus. Hence it is concluded that the HIV virus has passed on to humans from the monkeys, apes, chimpanzees and gorillas.
Transmission to humans
As a result of the specialized HIV test, it has been found that the SIV has passed on to humans through some means. It has then changed itself to affect humans, and has become the pathogen responsible for the manifestation of HIV and AIDS in humans. Many great apes, chimpanzees, gorillas, lemurs and other monkeys have been captivated in Africa for their meat. Many of these species are endangered too. When the butchers or hunters come in direct contact with the blood or other body fluids of these infected primates, the virus transfers itself on to them. If there are any cuts or bruises present on the butcher’s hand, then the virus will enter the blood stream and start multiplying there. This is the most plausible explanative theory given on how the SIV virus began affecting the humans.
HIV 2 and humans
After a thorough HIV test for the monkeys of Africa, the HIV 2 strain of the humans has been found to originate from the Sooty Mangabey monkeys of the West Africa. The SIV viruses of these monkeys were subjected to a HIV test. The SIV virus of these Mangabeys behaved differently. These viruses did not cause any health problems in the monkeys despite of the high content f viruses in the body. This SIV has been found to be the ancestor of the HIV type 2 viruses of the humans.