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The results of an onchocerciasis survey of total populations aged 5 years and over in 22 village groups in Cameroon rain-forest and savanna are reported. Using standardized techniques the same observers examined skin and eye lesions in 2,678 persons infected with O. volvulus, and compared them with lesions in 1,156 persons in whom the parasite was not detected.
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Anderson et al. (1974) studied this question.
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