Deadly NightmareTrypanosoma brucei gambiense, thetsetse fly, and the human body are thethree players in this disease. The fly suckshuman blood, which already contains theparasites. The parasites undergo a series oftransformations inside the body of the flyand finally lodge themselves in its salivaryglands. When the fly with parasites in itssaliva searches for food and bites a person, ittransfers the trypanosomes. The first phaseof the sickness, similar to other diseases,includes itching, fever, headaches, and jointpain. Later the endoparasite crosses thehematoencephalic barrier and attacks thecentral nervous system. There it disruptsvital neurological processes—including thewaking and sleeping cycle—which causesdrowsiness and even death.
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