Critically endangered black-faced lion tamarins vaccinated in the wild for the first time Conservationists in Brazil vaccinated three of the rare monkeys again

Critically endangered black-faced lion tamarins vaccinated in the wild for the first time Conservationists in Brazil vaccinated three of the rare monkeys against yellow fever, hoping to protect them from a disease that poses a serious threat to the species [📷](https://pbs.twimg.com/media/HT71X5L…