Bluetongue virus infection in pregnant ewes

Ian M. Parsonson From the USDA Agricultural Research Service, Arthropod-borne Animal Diseases Research Laboratory, P. O. Box 3965, University Station, Laramie, WY 82071-3965.

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 BVSc, PhD
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Albert J. Luedke From the USDA Agricultural Research Service, Arthropod-borne Animal Diseases Research Laboratory, P. O. Box 3965, University Station, Laramie, WY 82071-3965.

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 DVM, MS
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Thomas L. Barber From the USDA Agricultural Research Service, Arthropod-borne Animal Diseases Research Laboratory, P. O. Box 3965, University Station, Laramie, WY 82071-3965.

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Thomas E. Walton From the USDA Agricultural Research Service, Arthropod-borne Animal Diseases Research Laboratory, P. O. Box 3965, University Station, Laramie, WY 82071-3965.

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 DVM, PhD

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Summary

Inoculation of 53 ewes after 35, 45, 60, or 80 days of gestation with bluetongue virus serotypes 10, 11, 13, or 17, or with epizootic hemorrhagic disease virus serotypes 1 or 2, resulted in overt clinical disease in the 47 ewes inoculated with bluetongue virus but not in the 6 ewes inoculated with epizootic hemorrhagic disease virus. None of the lambs produced by these ewes had developmental defects or any evidence of persistence of viremia.

Summary

Inoculation of 53 ewes after 35, 45, 60, or 80 days of gestation with bluetongue virus serotypes 10, 11, 13, or 17, or with epizootic hemorrhagic disease virus serotypes 1 or 2, resulted in overt clinical disease in the 47 ewes inoculated with bluetongue virus but not in the 6 ewes inoculated with epizootic hemorrhagic disease virus. None of the lambs produced by these ewes had developmental defects or any evidence of persistence of viremia.

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