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Table 1 M. perstans prevalence and intensity in five bioecological zones surveyed without any treatment history

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 Community Number surveyed Number positive Prevalence (%) Geometric mean (mf/ml)
   Bansobi 195 0 0 0
   Dzeng 186 0 0 0
   Kifem I 151 0 0 0
GS Nkambe/2000 Lam 140 0 0 0
   Njanawa 105 0 0 0
   Rifem 212 0 0 0
   Tanyar 52 0 0 0
   Yang 126 0 0 0
   Total 1,167 0 0 0
   Bem 119 0 0 0
   Chunghe 78 0 0 0
   Kamine 125 0 0 0
   Kibbo 94 1 1.06 2,072.8
MFS Kumbo/2000 Lip 133 0 0 0
   Mbissa 115 0 0 0
   Mfume 68 0 0 0
   Nkanchi 146 0 0 0
   Total 878 1 0.11 2,072.8
   Jator 111 0 0.0 0
   Mbiripkwa 70 0 0.0 0
   Ngomkow 66 0 0.0 0
   Ngu 112 1 0.9 13.90
   Nguri 90 0 0.0 0
FS Nwa/2000 Nking 96 0 0.0 0
   Ntem 95 0 0.0 0
   Nwanti 107 0 0.0 0
   Nwat 52 0 0.0 0
   Sabongari 229 1 0.4 13.90
   Total 1,028 2 0.2 13.90
   Assam 57 52 91.2 10,402.8
   Bache 128 70 54.7 1,539.0
   Kesham 174 104 59.8 1,543.6
DERF Mamfe/2000 Obonyi 1 121 94 77.7 1,2577.0
   Obonyi-3 159 119 74.8 4,036.1
   Okpambe 45 35 77.8 8,743.4
   Takamanda 134 94 70.1 4,427.3
   Total 818 568 69.4 4,344.7
   Ajaman 88 76 86.4 91,380.1
   Akwa 66 57 86.4 40,762.6
   Araru 30 21 70.0 2,199.2
   Babi 26 26 100.0 31,180.4
DHERF Mamfe/2000 Babong 181 95 52.5 2,735.4
   Ekoneman 24 14 58.3 12,749.6
   Mbofong 39 36 92.3 94,757.9
   Nkoghau 107 63 58.9 11,391.1
   Ogurang 79 60 75.9 8,699.7
   Total 640 448 70.0 17,382.9
   Dem2 115 27 23.5 348.2
   Djal 114 30 26.3 1,380.9
   Kamba Mieri 126 19 15.1 811.6
   Konga 149 105 70.5 3,930.3
DHERF Batouri/2013 Gabaleta 47 6 12.8 899.4
   Ngoulmekong 96 52 54.2 2,334.0
   Nguikouassima 63 20 31.7 589.1
   Baktala 110 53 48.2 1,226.7
   Bouam 80 38 47.5 4,573.6
   Total 900 350 38.9 1,947.7
   Bibondi 100 55 55.0 4,296.8
DHERF Lolodorf/2010 Bikalla 94 65 69.1 19,797.5
   Bikoka 30 11 36.7 1,049.4
   Ngovayang 66 25 37.9 4,905.5
   Total 290 156 53.8 7,814.8
  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