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Table 3 Prevalence and mean mf intensity of M. perstans in the DERF and DHERF surveyed after over a decade under CDTI (Mamfe, Konye, Kumba and Tombel health districts)

From: Update on the distribution of Mansonella perstans in the southern part of Cameroon: influence of ecological factors and mass drug administration with ivermectin

Ecological zone Health district/year of survey CDTI status Community Number examined Number positive Prevalence (%) Geometric mean (mf/ml)
    Assam 59 40 67.80 4,763.3
DERF Mamfe (2010 & 2013) >10 years Bache 104 47 45.20 1,146.1
    Kesham 126 55 43.7 972.5
    Okpambe 87 45 51.70 3,173.6
    Total 376 187 49.73 1,934.8
    Afap 26 5 19.20 21.8
    Ayukaba 116 12 10.34 1,128.1
    Babong 93 68 73.11 4,971.1
    Bokwa 60 20 33.33 274.3
    Ebam 95 2 2.11 801.3
    Eshobi 90 36 40.0 1,154.9
DHERF Mamfe (2010 & 2013) >10 years Eyanchang 113 1 0.97 4,161.2
    Kajifu 100 22 22.0 3,101.8
    Mbakem 40 4 10.0 508.7
    Mbatop 115 9 7.83 299.7
    Mbeme 85 17 20.0 1,149.3
    Momboh 88 9 10.22 112.2
    Nkoghau 60 38 63.33 1,795.4
    Nyang 32 22 68.75 7,976.6
    Ogurang 86 66 76.74 12,170.2
    Taboh 77 11 14.30 73.1
    Total 1276 342 26.80 2,445.1
    Baduma 84 7 8.3 369.3
    Bakolle 78 5 6.4 155.7
    Bolo 107 11 10.3 165.6
    Dikomi Bafaw 101 12 11.9 72.6
    Eboko Bajor 89 10 11.2 216.7
DERF Konye (2010 & 2013) >10 years Kokaka 74 14 35.1 122.1
    Kombone 97 11 11.3 204.3
   Kurume 45 5 11.1 86.0
    Matondo 107 5 4.7 206.9
    Weme 103 17 16.5 385.6
    Total 885 97 11.0 183.2
    Bai Bikom 91 0 0 0
    Bai Manya 89 2 2.2 150.0
    Bai Panya 43 0 0 0
    Bakumba 76 11 14.5 971.0
    Bambele 66 11 16.7 377.0
    Big Massaka 157 7 4.5 2,234.2
    Bikoki 46 30 65.2 1,077.6
    Boa Bakundu 60 6 10 451.7
DERF Kumba (2010 & 2013) >10 years Bobanda 32 4 12.5 1,651.5
    Ediki 101 8 7.9 85.9
    Kotto Barombi 66 0 0 0
    Kumu-Kumu 34 11 32.4 418.8
    Marumba I 50 0 0 0
    Marumba II 68 0 0 0
    Mbalangi 100 2 2.0 359.1
    New Town 96 3 3.1 316.0
    Pete Bakundu 34 0 0 0
    Small Massaka 33 3 9.1 1,586.6
    Total 1241 98 7.9 667.7
    Bulutu 86 17 19.8 148.2
    Ehom 74 6 8.1 70.8
    Kack 142 28 19.7 337.5
    Mbabe 68 20 29.4 2,610.1
    Mbule 73 37 50.7 2,110.6
    Mile 18 54 6 11.1 279.5
DERF Tombel (2010 & 2014) >10 years Mpako 1 63 21 33.3 1,052.8
   Ndom 67 18 26.9 609.2
    Ngab 53 14 26.4 392.9
    Ngusi 102 11 10.8 2,452.9
    Nlog 107 38 35.5 4,003.6
    Nsuke 113 18 15.9 1,646.2
    Peng 81 22 27.2 616.8
    Ndabekom 87 25 28.7 1,321.1
    Total 1,170 281 24.0 1,081.0
  1. Abbreviations: GS grassland savanna, MFS mosaic forest savanna, FS forested savanna, DERF deciduous equatorial rainforest, DHERF dense humid equatorial rainforest, mf/ml M. perstans microfilariae per millilitre of blood