THE INFECTION OF MERINO SHEEP WITH BOVINE EPHEMERAL FEVER VIRUS |
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| Authors: | W. T. Hall B.V.Sc. K. N. Daddow B.Sc. Corrinne K. Dimmock B.Sc. T. D. St. George M.V.Sc. H. A. Standfast B.Sc. |
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| Affiliation: | Queensland Department of Primary Industries, Animal Research Institute, Yeerongpilly, Queensland, 4105;Division of Animal Health, CSIRO Long Pocket Laboratories, Indooroopilly, Queensland, 4068 |
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| Abstract: | Four Merino sheep inoculated intravenously with bovine blood containing ephemeral fever virus showed no clinical signs of ephemeral fever. Two sheep showed a mild haematological response and developed a neutralising antibody which closely paralled that of a steer inoculated at the same time. Leucocytes harvested from these 2 sheep on days 3 and 4 after inoculation with virus reproduced ephemeral fever when inoculated into susceptible steers whilst those harvested on days 1, 2 and 5 did not. Even though this indicates that EFV can multiply in some sheep when they are inoculated intravenously, it cannot be inferred that natural infection occurs. |
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