The bloodsucking insect with a saw for a mouth: how the tsetse fly bites through almost anything

Tsetse flies transmit some of Africa’s most persistent parasitic diseases. They have affected human health, livestock production and rural development for generations, across a region spanning millions of square kilometres in 37 sub-Saharan countries. Human African trypanosomiasis, or sleeping sickness, is caused by two species of single-celled parasites. Others infect wild and domestic animals, causing animal trypanosomosis, often called nagana in cattle. Sustained surveillance, diagnosis and…