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Table 2 Prevalence and mean mf intensity of M. perstans in zones under CDTI for 4–8 years (Bare, Bertoua, Messamena and Nwa)

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)
    Mandjibo 67 11 16.4 209.6
    Mbarembeng I 95 4 4.2 62.6
    Mbarembeng II 72 3 4.2 29.2
    Mbie 27 12 44.4 502.6
   4 years Mounko 67 3 4.5 85.6
DERF Bare/2010 Mpaka 73 1 1.4 13.9
    Ndom 103 36 35.0 1,410.3
    Ndouembot 22 17 77.3 15,322.1
    Ndouenke 29 21 72.4 7,965.2
    Nkoniambot 174 51 29.3 314.9
    Nkoniankoniama 19 14 73.7 3,546.0
    Nkounianke 124 29 23.4 912.5
    Total 872 202 23.2 1,116.7
    Bombi 112 82 73.2 4,162.3
    Deng-Deng 105 40 38.1 3,354.1
DHERF Bertoua/2013 8 years Kanda 126 33 26.2 5,341.8
    Mbethen 2 112 86 76.8 3,193.2
    Ndemba 1 106 40 37.7 767.8
    Total 561 281 50.1 3,062.6
    Aviation 114 22 19.3 222.5
    Bissoua 2 155 107 69.0 3,758.8
    Doume Village 42 10 23.8 209.4
    Koum 45 26 57.8 898.4
    Labba 34 27 79.4 9,189.4
DHERF Messamena/2013 8 years Mayos 74 39 52.7 1,757.1
    Meba 47 35 74.5 2,532.2
    Messamena Village 78 46 59.0 5,275.1
    Nkomzuh 58 31 53.4 1,180.3
    Ntollock 52 14 26.9 75.9
    Soleye 163 83 50.9 1,976.9
    Total 862 440 51.0 2,115.8
    Jator 115 2 1.7 150.0
    Mbiripkwa 137 0 0 0
    Ngomkow 156 1 0.6 316.0
    Ngu 143 0 0 0
FS Nwa/2013 8 years Nguri 143 0 0 0
    Nking 108 0 0 0
    Ntem 153 0 0 0
    Nwanti 140 1 0.7 111.4
    Nwat 124 1 0.8 13.9
    Sabongari 110 1 0.9 1,509.8
    TOTAL 1329 6 0.5 175.8
  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