Jean Baptiste Yaro
A cohort study to identify risk factors for Plasmodium falciparum infection in Burkinabe children: implications for other high burden high impact countries
Yaro, Jean Baptiste; Ouedraogo, Alphonse; Ouedraogo, Z. Amidou; Diarra, Amidou; Lankouande, Malik; Agboraw, Efundem; Worrall, Eve; Toe, Kobié Hyacinthe; Sanou, Antoine; Guelbeogo, W. Moussa; Sagnon, N’Fale; Ranson, Hilary; Tiono, Alfred B.; Lindsay, Steven W.; Wilson, Anne L.
Z. Amidou Ouedraogo
Kobié Hyacinthe Toe
W. Moussa Guelbeogo
Alfred B. Tiono
Professor Steve Lindsay firstname.lastname@example.org
Anne L. Wilson
Background: Progress in controlling malaria has stalled in recent years. Today the malaria burden is increasingly concentrated in a few countries, including Burkina Faso, where malaria is not declining. A cohort study was conducted to identify risk factors for malaria infection in children in southwest Burkina Faso, an area with high insecticide-treated net (ITN) coverage and insecticide-resistant vectors. Methods: Incidence of Plasmodium falciparum infection was measured in 252 children aged 5 to 15 years, using active and passive detection, during the 2017 transmission season, following clearance of infection. Demographic, socio-economic, environmental, and entomological risk factors, including use of ITNs and insecticide resistance were monitored. Results: During the six-month follow-up period, the overall incidence of P. falciparum infection was 2.78 episodes per child (95% CI = 2.66–2.91) by microscopy, and 3.11 (95% CI = 2.95–3.28) by polymerase chain reaction (PCR). The entomological inoculation rate (EIR) was 80.4 infective bites per child over the six-month malaria transmission season. At baseline, 80.6% of children were reported as sleeping under an ITN the previous night, although at the last survey, 23.3% of nets were in poor condition and considered no longer protective. No association was found between the rate of P. falciparum infection and either EIR (incidence rate ratio (IRR): 1.00, 95% CI: 1.00–1.00, p = 0.08) or mortality in WHO tube tests when vectors were exposed to 0.05% deltamethrin (IRR: 1.05, 95% CI: 0.73–1.50, p = 0.79). Travel history (IRR: 1.52, 95% CI: 1.45–1.59, p < 0.001) and higher socio-economic status were associated with an increased risk of P. falciparum infection (IRR: 1.05, 95% CI: 1.00–1.11, p = 0.04). Conclusions: Incidence of P. falciparum infection remains overwhelmingly high in the study area. The study findings suggest that because of the exceptionally high levels of malaria transmission in the study area, malaria elimination cannot be achieved solely by mass deployment of ITNs and additional control measures are needed.
Yaro, J. B., Ouedraogo, A., Ouedraogo, Z. A., Diarra, A., Lankouande, M., Agboraw, E., …Wilson, A. L. (2020). A cohort study to identify risk factors for Plasmodium falciparum infection in Burkinabe children: implications for other high burden high impact countries. Malaria Journal, 19(1), Article 371. https://doi.org/10.1186/s12936-020-03443-x
|Journal Article Type||Article|
|Acceptance Date||Oct 7, 2020|
|Online Publication Date||Oct 16, 2020|
|Deposit Date||Oct 28, 2020|
|Publicly Available Date||Oct 28, 2020|
|Peer Reviewed||Peer Reviewed|
Published Journal Article
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