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Table 1 Summary of the REMO surveys undertaken in the 20 APOC countries

From: The geographic distribution of onchocerciasis in the 20 participating countries of the African Programme for Onchocerciasis Control: (1) priority areas for ivermectin treatment

Country Villages surveyed # of persons examined Examined persons with palpable nodules Prevalence of nodules per village (%)
   Total per village Total Percentage Minimum Median Maximum
Angola 763 25,758 34 2,491 9.7 0.0 5.3 63.3
Burundi 150 6,053 40 501 8.3 0.0 3.3 83.3
Cameroun 817 30,179 37 8,625 28.6 0.0 20.0 100.0
Central African Republic 1,078 34,984 32 15,952 45.6 0.0 50.0 100.0
Chad 483 15,795 33 2,348 14.9 0.0 6.7 96.7
Congo 384 13,853 36 1,352 9.8 0.0 3.3 71.4
Democratic Republic of Congo 4,389 170,799 39 53,501 31.3 0.0 23.3 100.0
Equatorial Guinea 209 7,751 37 1,527 19.7 0.0 11.8 73.3
Ethiopia 885 30,355 34 5,458 18.0 0.0 14.6 81.5
Gabon 59 1,633 28 29 1.8 0.0 0.0 11.8
Kenya 94 3,822 41 8 0.2 0.0 0.0 4.8
Liberia 89 4,208 47 798 19.0 0.0 20.0 35.0
Malawi 291 13,122 45 543 4.1 0.0 0.0 36.0
Mozambique 289 10,325 36 99 1.0 0.0 0.0 16.2
Nigeria 2,716 127,459 47 21,165 16.6 0.0 12.0 96.0
Rwanda 89 3,126 35 20 0.6 0.0 0.0 6.0
South Sudan 473 16,501 35 2,211 13.4 0.0 10.0 93.3
Sudan 427 21,330 50 175 0.8 0.0 0.0 23.3
Tanzania 331 20,592 62 5,035 24.5 0.0 20.8 100.0
Uganda 457 18,723 41 4,772 25.5 0.0 20.0 100.0
Total 14,473 576,368 40 126,612 22.0 0.0 14.0 100.0