Peru's health ministry has sent emergency teams to a remote Amazon region to battle an outbreak of rabies spread by vampire bats.
Four children in the Awajun indigenous tribe died after being bitten by the bloodsucking mammals.
Health workers have given rabies vaccine to more than 500 people who have also been attacked. Some experts have linked mass vampire bat attacks on people in the Amazon to deforestation. The rabies outbreak is focused on the community of Urakusa in the north-eastern Peruvian Amazon, close to the border with Ecuador. The indigenous community appealed for help after being unable to explain the illness that had killed the children.