Prevalence and distribution of ocular onchocerciasis in three ecological zones in Nigeria.

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dc.contributor.authorUmeh, R.E
dc.contributor.authorMahmoud, A.O.
dc.contributor.authorHagan, M.
dc.contributor.authorWilson, M.
dc.contributor.authorOkoye, O.I
dc.contributor.authorAsana, U.
dc.contributor.authorBiritwum, R.B.
dc.contributor.authorOgbu-Pearce, P.
dc.contributor.authorElhassan, E.
dc.contributor.authorYaméogo, L.
dc.contributor.authorBraideo, E.I
dc.contributor.authorSeketeli, A.
dc.date.accessioned2013-06-25T15:34:22Z
dc.date.accessioned2017-10-16T11:43:37Z
dc.date.available2013-06-25T15:34:22Z
dc.date.available2017-10-16T11:43:37Z
dc.date.issued2010
dc.description.abstractThe African Programme for Onchocerciasis Control (APOC) sponsored a baseline study in Nigeria between 1998 and 1999 on the prevalence and distribution of Onchocerciasis. The randomly selected 1,064 subjects in the baseline study underwent detailed eye examination in Cross River (rain forest), Taraba (savanna) and Kogi (forest-savanna) States. This paper compares and contrasts the public health significance of ocular onchocerciasis in these ecological zones. A blindness prevalence of 2.4% was recorded in the study, onchocerciasis being responsible for 30.2% of the bilaterally blind subjects. Onchocerciasis-induced blindness prevalence was relatively high in the rain forest and forest savanna zones of Cross River and Kogi States, Cross River having the highest site-specific prevalence (50.0%), followed by Kogi (41.7%). Taraba recorded only 27.3%. Other conditions identified included glaucoma, optic nerve disease and cataract rates of which were also found to be high among the population (6.9%, 6.5 % and 8.9% respectively). Anterior segment onchocercal lesions, punctate and sclerosing keratitis were the predominant features of the infection in the savanna zone (14.1% and 6.3% respectively), while posterior segment lesions were much more common in the forest zone. The need to sustain the present efforts to control onchocerciasis through mass ivermectin treatment is recommended.en_US
dc.identifier.citationUmeh, R. E., Mahmoud, A. O., Biritwum, R., Wilson, M., Okoye, O. I., Asana, U., . . . Seketeli, A. (2010). Prevalence and distribution of ocular onchocerciasis in three ecological zones in nigeria. African Journal of Medicine and Medical Sciences, 39(4), 267-275.en_US
dc.identifier.urihttp://197.255.68.203/handle/123456789/4079
dc.language.isoenen_US
dc.publisherAfrican Journal of Medicine and Medical Sciencesen_US
dc.subjectEMTREE medical terms: adolescent; adult; age distribution; aged; animal; article; blindness; child; female; human; isolation and purification; male; middle aged; Nigeria; Onchocerca; onchocerciasis; parasitology; prevalence; sex ratio; visual acuityen_US
dc.titlePrevalence and distribution of ocular onchocerciasis in three ecological zones in Nigeria.en_US
dc.typeArticleen_US

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