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Acquired immunodeficiency syndrome (AIDS) of humans is caused by two lentiviruses, human immunodeficiency viruses types 1 and 2 (HIV-1 and HIV-2). Here, we describe the origins and evolution of these viruses, and the circumstances that led…
"According to this theory, the initial passage of the HIV virus to humans could have taken place during polio vaccination campaigns carried out between 1957-1960 in the Democratic Republic of Congo, as well as Burundi and Rwanda.
The human immunodeficiency viruses (HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), [1 ] [2 ] a condition in which progressive failure of the…