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Table 5 Documented malaria prevalence (from literature vs MAP database) around some African dams

From: Malaria impact of large dams in sub-Saharan Africa: maps, estimates and predictions

Stable/unstable Location Documented impact (from literature) Documented impact (MAP) Source (reference)
Unstable Transmission Manyuchi dam on Mwenzi river of Zimbabwe 0 % malaria before the dam, 28 % prevalence after the dam 22.4 % in <2 km, and 8 % in 5–9 km [14]
Bamendjin dam in Cameroon 36 and 25 % in communities living <3 km and >14 km, respectively 41 % in <2 km communities and 18 % in 5–9 km [9]
Kamburu dam on Upper Tana River Basine, Central Kenya 4.5 % in communities <4 km, and 1.8 % in those 11 km away 19 % in <2 km communities and 6.5 % in 5–9 km [10]
Masinga dam, eastern Kenya 26 % in communities <1 km and 7 % in those living >3 km from the dam 31 % in communities living <3 km and 11 % in those living within 5–9 km [32]
Gilgel-Gibe dam on Omo river of Ethiopia PVa prevalence was 7.7 % in communities within 3 km as compared to 4.4 % in those living >3 km from the dam. MAP only documents Pfb prevalence [13, 33]
Koka dam on Awash river of Ethiopia 9 % in communities <1 km; 0.53 in those 5–9 km away 25 % in <1 km and 4.5 % at 5–9 km [11, 12, 34]
Mai Nigus, Mai Sessela and Mai Seye dams in Highlands of Tigray, Northern Ethiopia 4.17 % in communities <3 km and 3.65 % in >6 km 2.1 % in < 2 km and 0.4 % in 5–9 km [35, 36]
Stable transmission Diama dam Senegal River Basin, Senegal 31 % before dam construction and 29 % after dam construction 39 % in <2 km and 24.5 % in 5–9 km [37]
Foum Glaita on Gorgor river, southeast Mauritania 26 % before construction and 21 % after construction 31 % within 2 km and 27 % within 5–9 km [17]
Akosombo dam, Ghana 24 % in 2004, 34 % in 2005 and 41 % in 2006—a 10 % increase annually in communities <3 km 39 % in 2010 in communities within 2 km [15]
Two dams in Middle Senegal River Basin, Northern Senegal 22 and 17 % in communities within 3 km and at 7 km, respectively 11 % in 2 km radius and 18 % in 5–9 km [16]
  1. Malaria prevalence was determined from MAP database based on the estimates of reservoir perimeter
  2. MAP Malaria Atlas Project
  3. a Plasmodium vivax
  4. b Plasmodium falciparum