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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