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How the coronavirus ‘jumped’ to humans is a story as old as evolution

Viruses have been spreading from animals to humans for many thousands of years, ever since we have farmed with them, lived among them, and killed them for food.

This chimpanzee, named Betty, was among five who died from a human cold virus in Uganda in 2013. Other human viruses have since been found in chimps.
This chimpanzee, named Betty, was among five who died from a human cold virus in Uganda in 2013. Other human viruses have since been found in chimps.Read moreRICHARD WRANGHAM/HARVARD UNIVERSITY