Lymphatic filariasis in western Ethiopia with special emphasis on prevalence of Wuchereria bancrofti antigenaemia in and around onchocerciasis endemic areas

Shiferaw, Welelta, Kebede, Tadesse, Graves, Patricia M., Golasa, Lemu, Gebre, Teshome, Mosher, Aryc W., Tadesse, Abiot, Sime, Heven, Lambiyo, Tariku, Panicker, K.N., Richards, Frank O., and Hailu, Asrat (2012) Lymphatic filariasis in western Ethiopia with special emphasis on prevalence of Wuchereria bancrofti antigenaemia in and around onchocerciasis endemic areas. Transactions of the Royal Society of Tropical Medicine and Hygiene, 106 (2). pp. 117-127.

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Abstract

Lymphatic filariasis is known to be endemic in Gambella Region, western Ethiopia, but the full extent of its endemicity in other regions is unknown. A national mapping program for Ethiopia was initiated in 2008. This report summarizes initial data on the prevalence of Wuchereria bancrofti antigenaemia based on surveys carried out in a sampled population of 11 685 individuals living in 125 villages (112 districts) of western Ethiopia. The overall prevalence rate was 3.7%, but high geographical clustering and variation in prevalence (ranging from 0% to more than 50%) was found. The prevalence of hydrocele (in males) and lymphoedema of limbs was 0.8% and 3.6% respectively. Significantly higher (χ2 = 49.6; P < 0.01) prevalence of antigenaemia was noted in known onchocerciasis endemic districts (4.7%) compared to non-onchocerciasis endemic districts (2.3%). Thirty-four of the 112 districts, with a population of 1 547 685 in 2007, were found to be endemic. Of these, the numbers of districts with prevalence rates of >20%, 10–20% and 5–9% were nine, 14 and 20 respectively. Twenty-nine of these 34 endemic districts were found in three regions: Gambella Region (seven districts), Beneshangul-Gumuz Region (13 districts), and Southern Nations, Nationalities and Peoples' Region (SNNPR) (nine districts). The other five were from Amhara (two districts) and Oromia (three districts) regions. A tentative distribution map has been drawn to facilitate the launching of the Ethiopia LF elimination program.

Item ID: 28624
Item Type: Article (Research - C1)
ISSN: 1878-3503
Keywords: lymphatic filariasis, prevalence of Wuchereria bancrofti antigenaemia, endemic areas
Funders: Carter Center, World Health Organization
Date Deposited: 03 Sep 2013 05:12
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111799 Public Health and Health Services not elsewhere classified @ 100%
SEO Codes: 92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920499 Public Health (excl. Specific Population Health) not elsewhere classified @ 100%
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