An outbreak of sheep pox in a flock of 2,191 purebred indigenous sheep and their crosses with exotic European sheep had a course of 18 weeks. The peak incidence and mortality occurred 5 weeks after the onset of the epidemic. The morbidity was highest in the purebred and crossbred lambs and crossbred hoggets. The mortality rate and case fatality rate were highest in the crossbred hoggets.
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