Malaria incidence and prevalence among children living in a peri-urban area on the coast of benin, west Africa: a longitudinal study.
Nahum, Alain;
Erhart, Annette;
Mayé, Ambroisine;
Ahounou, Daniel;
van Overmeir, Chantal;
Menten, Joris;
van Loen, Harry;
Akogbeto, Martin;
Coosemans, Marc;
Massougbodji, Achille;
+1 more...D'Alessandro, Umberto;
(2010)
Malaria incidence and prevalence among children living in a peri-urban area on the coast of benin, west Africa: a longitudinal study.
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE, 83 (3).
pp. 465-473.
ISSN 0002-9637
DOI: https://doi.org/10.4269/ajtmh.2010.09-0611
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Clinical malaria incidence was determined over 18 months in a cohort of 553 children living in a peri-urban area near Cotonou. Three cross-sectional surveys were also carried out. Malaria incidence showed a marked seasonal distribution with two peaks: the first corresponding to the long rainy season, and the second corresponding to the overflowing of Lake Nokoue. The overall Plasmodium falciparum incidence rate was estimated at 84/1,000 person-months, and its prevalence was estimated at over 40% in the two first surveys and 68.9% in the third survey. Multivariate analysis showed that girls and people living in closed houses had a lower risk of clinical malaria. Bed net use was associated with a lower risk of malaria infection. Conversely, children of families owing a pirogue were at higher risk of clinical malaria. Considering the high pyrethroids resistance, indoor residual spraying with either a carbamate or an organophospate insecticide may have a major impact on the malaria burden.