| nairobi sheep disease viruses | A group of viruses of the genus nairovirus, transmitted by the ixodid ticks and producing a lethal gastroenteritis in sheep and goats, especially in africa. Though major veterinary pathogens, their effect on humans has not been firmly established. (12 Dec 1998) |
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| infectious necrotic hepatitis of sheep | A disease of sheep caused by the bacterium Clostridium novyi, which invades livers damaged by the fluke Fasciola hepatica and causes severe necrosis and death; this disease occurs in nearly all parts of the world, including the U.S. Sometimes called black disease because of the extensive haemorrhages seen on the inner surface of the pelt when it is removed. Synonym: black disease. (05 Mar 2000) |
| Eimeria of sheep and goats | Eimeria ovina (arloingi), the most common and destructive species in sheep, principal losses being in young lambs; Eimeria minakolyakimovae, a highly pathogenic parasite of sheep; Eimeria parva and Eimeria pallida are frequently found but believed to be of low virulence; Eimeria faurei, Eimeria intricata, Eimeria granulosa, Eimeria ahsata, Eimeria hawkins, Eimeria gilruthi, Eimeria gonzalezi, Eimeria christenseni, Eimeria punctata, Eimeria crandallis, and Eimeria honessi, are found in sheep or goats, and are probably of low pathogenicity. All of these species invade the epithelium of the small intestine. Synonym: coccidia of sheep and goats. (05 Mar 2000) |
| Kisenyi sheep disease virus | A virus, in the family Bunyaviridae, that is probably the same as Nairobi sheep disease virus. (05 Mar 2000) |