You have no doubt already heard about emerging viruses. The international media regularly informs us about viruses raging across the world, for instance Zika, Ebola and dengue. But where do they come from? Mosquitoes, bats, rodents and primates carry viruses, and when humans share an area with these species, they are exposed to various infectious risks. To shed light on this situation, known as zoonotic pre-emergence, Victor Narat from the Medical Anthropology and Environment Research Group, set off to investigate in the field.