The tsetse fly tells her story of how she became an involuntary vector trasmitting trypanosomes. The parasites cause Nagana disease in cattle throughout sub-Saharan Africa and sleeping sickness in humans in some thirty African countries. Contents: Introduction. The encapsulated egg. A three-stage larva. A ten second birth. The pupa in place. The very young fly. A fly different from other flies. An assessment of my senses before the encounter. Mating before eating. The vital blood meal. My preferred habitat. Slow and thorough digestion. Four stroke ovaries. A different meal. Under the influence. Taking a closer look. A herd in bad shape. Attacking a human. Nothing to be proud of. The beginning of the end. An unexpected conclusion. A disease shared between animals and humans. The high cost of cohabitation. SOS Initiative, Uganda, IKARE Ltd, Ceva Santé Animale: Together, beyond animal health. Cirad's contribution