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A population-based study of hydatid disease was conducted among the Hamar of Ethiopia. Seven of 990 patients examined with a portable ultrasound scanner proved to have cysts (0.7% prevalence). Cysts were most common (4.7%) among women > or = 40 years of age. Only one male presented with a cyst. These results indicate a sex-specific hydatid public health problem in this tribe.
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Klungsøyr et al. (1993) studied this question.
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