Transmission From Non-humans To Humans
Most HIV researchers agree that HIV evolved at some point from the closely related Simian immunodeficiency virus (SIV), and that SIV or HIV (post mutation) was transferred from non-human primates to humans in the recent past (as a type of zoonosis). Research in this area is conducted using molecular phylogenetics, comparing viral genomic sequences to determine relatedness.
Read more about this topic: Origin Of AIDS
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“The worst condition of humans is when they lose knowledge and control of themselves.”
—Michel de Montaigne (1533–1592)