The prevalence of enzootic abortion of ewes in Scotland was estimated over a period of five years. Between 1987 and 1991, 30.7 per cent of all flocks with breeding ewes in Scotland submitted ovine abortion material, and of these flocks 28 per cent showed evidence of the infection, giving a prevalence of 8.6 per cent. Regional differences were observed in both the submission rate and the prevalence.
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