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