There are several stories about how AIDS started in the world. HIV or the Human immunodeficiency virus was first found in the African continent in 1940. The first patient to be diagnosed with AIDS was from Africa and in the year 1959. This person’s blood was stored to find out how the HIV virus acts and how it damages the immune system. In his blood there was AIDS virus.

Some of the properties of the HIV virus are compared to the SIV, which is Simian Immunodeficiency Virus. They both had high similarities in their properties. The SIV is a virus that is found in monkeys and apes. Also, the genetic structure of both the viruses is very similar to each other. The SIV virus is the reason to cause AIDS in monkeys. However, this particular virus had no effect on monkeys.

In the US, AIDS was first discovered in the 1980s. Some gay people were falling sick frequently and after several diagnoses there was no trace of any underlying illness. Also most of the illnesses that occurred were related to the immune system. Also, there was no information on how much time the disease takes to show symptoms. However, the exact origin of the AIDS virus is unknown. Event today scientists do not know from where and how the virus came. However, the virus found a home in human beings and it keeps transferring from one person to another sexually. Also, the studies revealed that AIDS by itself showed no visible symptoms. The symptoms are known only when a person falls ill repetitively.

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