The phenomenon of animals catching diseases from humans, called reverse zoonoses, has had a severe impact on great ape populations, often representing a bigger threat than habitat loss or poaching.

However, while many scientists and conservationists agree that human diseases pose one of the greatest risks to great apes today there are a few efforts under way to use a research-based approach to mitigate this problem.

This is an audio version of our Feature Chimpanzees are dying from our colds — these scientists are trying to save them

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