Bovine ephemeral fever (BEF) is an important viral disease of cattle. Despite the extensive use of inactivated vaccines for the prevention of BEF, a controlled study of their field effectiveness has never been performed. We conducted a large field effectiveness study of a BEF inactivated vaccine, during a large BEF outbreak. Neutralizing antibody titers measured in 385 heifers and calves 1 mont...

The surface glycoprotein G is considered as the major neutralizing and protective antigen of bovine ephemeral fever virus (BEFV). Comparison of the deduced amino acid sequence of G protein of BEFV isolates during the period 1984-2004 outbreaks in Taiwan showed amino acid substitutions in the neutralizing epitopes. All the isolates differ markedly in the neutralizing epitope at the same amino ac...

Ephemeral fever or thn:.e-day-stiffsickness of cattle has been known for nearly a century, and has been described in East Africa (Schweinfurth, 1867), Rhodesia (Bevan, 1907), South Africa (Theiler, 1908), Indonesia (Merkins, 1919 ; Burggraaf, 1932), India (Meadows, 1919), Japan (Futamara, 1922), Palestine (Rosen, 1931), and Australia (Mulhearn, 1937). During recent years world-wide surveys on t...

Bovine ephemeral fever (BEF) was diagnosed on several commercial farms around Harare, Zimbabwe. The affected animals showed signs of fever (40-41.5 degrees C), depression, ruminal stasis, lameness and recumbency. Eight of those attended had severe respiratory distress and subcutaneous emphysema. Haematological and biochemical results indicated leukocytosis with an attending lymphopaenia. Seleni...

Hong Kong is within the tropics and has a seasonal climate. In winter, shores support patches of ephemeral macroalgae and areas of seemingly bare rock close to crevices where molluscan herbivores are abundant. Using a factorial design of herbivore exclusions in areas far and close to crevices, the development of algal assemblages was monitored in mid-shore, cleared areas, in winter. To estimate...

The occurrence of bovine ephemeral fever virus has been reported from South Africa, Australia and Japan (Andrewes & Pereira, J 967) . The similarity of the symptoms caused and the sensitivity of the South African and Australian viruses to ether and desoxycholate suggest that the same virus occurs in all these countries. Electron microscopic studies on the South African form (EF 1) (Lecatsas, Th...