Herpes Infected Humans Before They Were Human

The virus originated in chimpanzees, jumping into humans 1.6 million years ago

Researchers at the University of California, San Diego School of Medicine have identified the evolutionary origins of human herpes simplex virus (HSV) -1 and -2, reporting that the former infected hominids before their evolutionary split from chimpanzees 6 million years ago while the latter jumped from ancient chimpanzees to ancestors of modern humans – Homo erectus – approximately 1.6 million years ago. … Read the full story from the UC San Diego News Center

Sexual Selection by Sugar Molecule Helped Determine Human Origins

Researchers at the University of California, San Diego School of Medicine say that losing the ability to make a particular kind of sugar molecule boosted disease protection in early hominids, and may have directed the evolutionary emergence of our ancestors, the genus Homo….Read the full story from the UCSD Newsroom

Dr. Ajit Varki

Dr. Ajit Varki, pictured above left, is senior author along with Dr. Pascal Gagneux, who is professor in the Department of Cellular and Molecular Medicine. Ajit Varki, MD, is Distinguished Professor of Medicine and Cellular and Molecular Medicine, Co-Director of the Glycobiology Research and Training Center, and Co-Director of the UCSD/Salk Center for Academic Research and Training in Anthropogeny.   |  Read the study published in PNAS (free full text)