from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An often fatal disease of African ungulates caused by various species of trypanosomes and transmitted by the bite of the tsetse fly. Also called tsetse disease.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A disease of vertebrates caused by trypanosomes.
from the GNU version of the Collaborative International Dictionary of English
- n. A disease of horses and other domestic animals, transmitted by the tsetse fly; any trypanosomiasis, especially the variety caused by Trypanosoma brucei.
from The Century Dictionary and Cyclopedia
- n. A very fatal, at present incurable infectious (but not contagious) disease of horses in Africa, caused by the presence of flagellate protozoa of the species Trypanosoma brucei. The parasites live in the blood-plasma, and are transmitted by the tsetse-fly, Glossina morsitans. Also called tsetse-fly disease.
These flies carry a microscopic organism called a trypanosome which is communicated to cattle causing a deadly disease called "nagana"; certain species of the fly carry a special variety of trypanosome which produces "sleeping sickness" in man.
J. 7 Traps for tsetse fly (human sleeping sickness, cattle nagana) control, Burkina Faso
Currently, the mainstay of the control of tsetse flies, vectors of trypanosomiasis (causing sleeping sickness in humans and nagana in cattle) is the use of traps (slide J. 7).
One of the most dangerous diseases in man, the African sleeping sickness, is caused by a trypanosome, and the disease of domestic cattle in Africa, nagana, or tsetse fly disease, is also so produced.
The destruction of wild animals in South Africa which, by removing the sources of nagana, rendered the settlement of the country possible was due chiefly to the introduction of another infectious disease, rinderpest, which not only destroyed the wild animals but produced great destruction of the domestic cattle as well.
In general the disease is very similar to and belongs in the same general class with tsetse-fly disease, or nagana, of
Crithidia, multiply freely, and pass ultimately to the mouthparts or salivary structures whence they may be inoculated into a new vertebrate host bitten by the invertebratehost, and that are responsible for various serious diseases (as Chagas 'disease, dourine, nagana, sleeping sickness, and surra) of humans and domestic animals
Trypanosoma brucei is the causative agent of African sleeping sickness in humans and one of the causes of nagana in cattle.
Waray-Waray News: Sa luyo san pagkuri san ekonomiya nagana pa an iba nga mga negosyo ngan padayon an panguha trabahante
The tsetse fly belt has expanded, resulting into increased cases of sleeping sickness, nagana and the associated drug resistance.