| 释义 |
nagana|nəˈgɑːnə|
[ad. Zulu nakane.]
A disease of domestic animals in southern Africa, characterized by fever, lethargy, and œdematous swellings, and caused by the hæmoflagellate parasite Trypanosoma brucei which is transmitted by tsetse flies of the genus Glossina. Also attrib.
1895D. Bruce (title) Preliminary report on the tsetse fly-disease, or nagana, in Zululand. 1896Nature 16 Apr. 567/1 Nagana pursues a much slower course in cattle than in horses. 1904Q. Rev. July 120 The ‘fly districts’ where nagana disease is rife. 1904Brit. Med. Jrnl. 20 Aug. 368 Nuttall of Cambridge..experimented on the conveyance of the nagana trypanosome from sick to healthy animals. 1925Times 29 Dec. 11/3 It was believed that wild game..formed a permanent reservoir from which tsetses could convey ‘nagana’ to domestic stock. 1931J. S. Huxley What dare I Think? i. 33 Human sleeping sickness and nagana disease of cattle, [are] transmitted by tsetse-flies. 1947[see horse-sickness (horse n. 28 a)]. 1965New Scientist 26 Aug. 504/3 Wild game don't suffer from nagana, the tsetse-borne trypanosome disease that disastrously affects domestic cattle. 1970Jubb & Kennedy Pathol. Domestic Animals (ed. 2) I. iv. 324/1 Trypanosoma brucei is a cause of nagana in most domestic species in Africa, but man is refractory. |