Geographic distribution and epidemiology of Oesophagostomum bifurcum and hookworm infections in humans in Togo.

D S PitDepartment of Parasitology, Leiden University Medical Centre, The Netherlands.

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F E RijckenDepartment of Parasitology, Leiden University Medical Centre, The Netherlands.

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E C RaspoortDepartment of Parasitology, Leiden University Medical Centre, The Netherlands.

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S M BaetaDepartment of Parasitology, Leiden University Medical Centre, The Netherlands.

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A M PoldermanDepartment of Parasitology, Leiden University Medical Centre, The Netherlands.

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In contrast to the rest of the world, infections with Oesophagostomum bifurcum are commonly found in humans in northern Togo and Ghana. In addition, infections with hookworm are endemic in this region. In the present study, a detailed map of the geographic distribution of O. bifurcum and hookworm infections in northern Togo was made. There were a number of foci with high prevalence of infection with O. bifurcum. All the villages examined were infected with hookworm, and the distribution was quite patchy. Women were infected with O. bifurcum more often than men, while infections with hookworm were more prevalent in men than in women. The prevalence and intensity of infection with both parasites were clearly age-dependent. We estimate that more than a 100,000 people in Togo are infected with O. bifurcum and more than 230,000 are infected with hookworm.

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