Skip to main content

Table 2 Surveyed area and population by estimated nodule prevalence in the 20 APOC countries

From: The geographic distribution of onchocerciasis in the 20 participating countries of the African Programme for Onchocerciasis Control: (2) pre-control endemicity levels and estimated number infected

Country

Total surveyed area

Surface (1000 km2)

Estimated population (1000)

Estimated population as % of total population of surveyed area

Population per km2 in CDTi area

Surface (1000 km2)

Estimated Population (1000)

Prevalence of nodules 0-4.9%

Prevalence of nodules 5-19.9%

Prevalence of nodules ≥ 20%

Prevalence of nodules 0-4.9%

Prevalence of nodules 5-19.9%

Prevalence of nodules ≥ 20%

Prevalence of nodules 0-4.9%

Prevalence of nodules 5-19.9%

Prevalence of nodules ≥ 20%

Angola

3.8

1,015

3,812

278

570

166

1,046

2,142

625

27.4

56.2

16.4

Burundi

341.0

24

8,252

11

11

2

3,821

3,760

671

46.3

45.6

8.1

Cameroon

24.2

430

10,389

64

149

217

1,555

3,599

5,234

15.0

34.6

50.4

CAR

5.2

448

2,312

135

81

232

697

418

1,198

30.1

18.1

51.8

Chad

21.6

257

5,557

152

51

54

3,286

1,099

1,171

59.1

19.8

21.1

Congo

34.8

271

9,432

194

62

15

6,750

2,159

523

71.6

22.9

5.5

DRC

22.1

2,053

45,391

318

683

1,052

7,040

15,089

23,262

15.5

33.2

51.2

Eq Guinea

22.0

23

433

3

18

1

54

298

81

12.4

68.8

18.7

Ethiopia

46.7

446

20,842

168

152

126

7,844

7,094

5,904

37.6

34.0

28.3

Gabon

NA

191

722

88

101

2

333

381

8

46.1

52.8

1.2

Kenya

NA

57

3,035

57

0

0

3,035

0

0

100.0

0.0

0.0

Liberia

30.2

96

2,884

0

42

53

10

1,269

1,604

0.3

44.0

55.6

Malawi

237.4

77

18,245

61

11

4

14,529

2,708

1,008

79.6

14.8

5.5

Mozambique

NA

549

9,889

483

65

1

8,694

1,170

25

87.9

11.8

0.2

Nigeria

65.3

858

56,016

175

463

220

11,440

30,239

14,336

20.4

54.0

25.6

Rwanda

NA

20

9,550

19

1

0

9,550

0

0

100.0

0.0

0.0

South Sudan

13.8

535

7,380

115

206

214

1,591

2,842

2,947

21.6

38.5

39.9

Sudan

14.6

346

5,053

331

13

2

4,841

190

23

95.8

3.8

0.4

Tanzania

19.4

393

7,631

221

66

106

4,289

1,276

2,065

56.2

16.7

27.1

Uganda

56.4

180

10,135

128

28

24

7,208

1,556

1,371

71.1

15.4

13.5

Total

27.1

8,270

236,959

3,004

2,774

2,493

97,611

77,291

62,056

41.2

32.6

26.2