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Table 2 Annual malaria incidence (expressed as the number of clinical cases per 1000 person-year) and number of annual malaria cases around large dams in sub-Saharan Africa

From: Malaria around large dams in Africa: effect of environmental and transmission endemicity factors

 

Distance cohort (km)

2000

2005

2010

2015

Malaria incidence

No. cases

Malaria incidence

No. cases

Malaria incidence

No. cases

Malaria incidence

No. cases

Stable

< 5

43.3*

3,448,500

42.4*

3,485,490

39.3*

3,832,743

29.7*

3,511,483

0–1

52.1

543,332

50.6

595,494

45.1

593,448

36.8

453,107

1–2

48.3

731,648

47.1

749,875

40.6

796,294

31.5

563,976

2–5

40.2

2,173,520

39.2

2,140,121

37.7

2,443,001

28.3

2,494,400

5–10

25.2

3,708,154

34.1

3,921,842

31.1

3,899,928

22.4

3,492,512

Unstable

< 5

25.4

481,626

19.1

473,660

14.1

486,790

11.7

639,143

0–1

32.8#

136,061

26.9#

122,680

19.2#

113,286

16.9#

152,670

1–2

29.8

113,619

20.1

91,603

16.5

104,727

12.8

148,981

2–5

21.1

231,946

16.6

259,376

12.1

268,777

9.9

337,492

5–10

16.2

419,324

11.8

388,561

9.4

380,143

6.1

344,780

  1. * In stable area, annual malaria incidence rate differenced significantly in communities < 5 km and 5–10 km from the dam for all years (Mann–Whitney test, P < 0.05 for all comparisons after the Bonferroni corrections for multiple comparisons)
  2. #In unstable area, annual malaria incidence differed significantly among the four distance cohorts for all years (Mann–Whitney test, P < 0.05 for all comparisons after the Bonferroni corrections for multiple comparisons)