2022
DOI: 10.4269/ajtmh.21-0390
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Proximity of Residence to Irrigation Determines Malaria Risk and Anopheles Abundance at an Irrigated Agroecosystem in Malawi

Abstract: As countries of sub-Saharan Africa expand irrigation to improve food security and foster economic growth, it is important to quantify the malaria risk associated with this process. Irrigated ecosystems can be associated with increased malaria risk, but this relationship is not fully understood. We studied this relationship at the Bwanje Valley Irrigation Scheme (800 hectares) in Malawi. Household prevalence of malaria and indoor Anopheles density were quantified in two cross-sectional studies in 2016 and 2017 … Show more

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Cited by 16 publications
(15 citation statements)
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“…This study also revealed short walk time distance (0–15 min) to water sources was one of the risk factors for malaria among children. This result is in line with other studies focusing on malaria infections and distance to water sources [ 52 , 53 ]. Although distant water sources were associated with reduced malaria risk, this result should not hamper efforts geared to improve water access in refugee settlements.…”
Section: Discussionsupporting
confidence: 93%
“…This study also revealed short walk time distance (0–15 min) to water sources was one of the risk factors for malaria among children. This result is in line with other studies focusing on malaria infections and distance to water sources [ 52 , 53 ]. Although distant water sources were associated with reduced malaria risk, this result should not hamper efforts geared to improve water access in refugee settlements.…”
Section: Discussionsupporting
confidence: 93%
“…Forty-one (41) studies were conducted in 20 countries in SSA. The review had eight studies conducted in Tanzania [ 21 , 23 , 28 33 ], and Malawi [ 23 , 34 40 ] and seven studies from Uganda [ 1 , 22 , 23 , 25 , 41 43 ], four in Ethiopia [ 18 , 19 , 44 , 45 ], three in Kenya [ 46 48 ], two in Ghana [ 27 , 49 ], the Gambia [ 27 , 49 ], and Burkina Faso [ 49 , 50 ], Democratic Republic of Congo (DRC) [ 51 , 52 ], Nigeria [ 23 , 53 ], Mali [ 49 , 54 ], Mozambique [ 55 , 56 ], while Cameroon [ 57 ], Equatorial Guinea [ 24 ], Angola [ 23 ], Liberia [ 23 ], Rwanda [ 23 ], Senegal [ 23 ], Madagascar [ 23 ] and South Africa [ 20 ] all had one study.…”
Section: Resultsmentioning
confidence: 99%
“…The general interplay between irrigation and malaria in Africa is well-understood but the relationship is complex and depends on the agroecosystem, socio-economic factors, local vector behaviour and ecology, and the seasonality of disease 12,13 . Efforts to characterise this relationship in Malawi have been performed in a commercial sugar growing estate and within an irrigated rice valley 14,15 , and research is underway to do the same within a World Bank funded large-scale transformation programme 16 . These systems are, however, much larger and concentrated on a single geographic area.…”
Section: Introductionmentioning
confidence: 99%