Disease

Human evolution and parasitic infections have run hand in hand, and thanks to the spinoffs from the Human Genome Project, we now know much more about the origins of the human race than ever before. Sometime, about 150,000 years ago, Homo sapiens emerged in eastern Africa and spread throughout the world, possibly in several waves, until 15,000 years ago at the end of the Ice Age humans had migrated to and inhabited virtually the whole of the face of the Earth, bringing some parasites with them and collecting others on the way.