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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Relationship between entomological inoculation rate, Plasmodium falciparum prevalence rate, and incidence of malaria attack in rural Gabon
Acta Tropica, Volume 85, No. 3, Year 2003
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Description
To assess the relationships between variations of Plasmodium falciparum transmission and those of peripheral parasitaemia prevalence or malaria attack incidence rates in regions with limited fluctuations of transmission, we conducted a follow-up in two Gabonese populations. Entomological surveys were carried out from May 1995 to April 1996 in Dienga, and from May 1998 to April 1999 in Benguia. In Dienga, malaria transmission was seasonal, being not detected during two 3-month periods. Mean entomological inoculation rate (EIR) was 0.28 infective bite/person/night. In Benguia, malaria transmission was perennial with seasonal fluctuations, mean EIR being 0.76 infective bite/person/night. In Dienga, 301 schoolchildren were followed from October 1995 to March 1996. Clinical malaria attack was defined as fever associated with >5000 parasites/μl of blood. P. falciparum prevalence varied from 28 to 42%, and monthly malaria attack incidence from 30 to 169‰. In Benguia, the entire population (122 persons) was followed from November 1998 to April 1999. Prevalence varied from 22 to 50%, and monthly malaria attack incidence from 52 to 179‰. In each area, entomological variations were not related to parasite prevalence, but preceded malaria attack incidence with 1- or 2-month time lag, corresponding to the pre-patency period that differs in the two populations, possibly according to differences in immunity related to parasite transmission. © 2002 Elsevier Science B.V. All rights reserved.
Authors & Co-Authors
Elissa, Nohal
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Mayotte
Dass-serv. de Lutte Antivectorielle
Migot-Nabias, Florence
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Senegal, Dakar
Institut de Recherche Pour le Développement Dakar
Luty, A. J.F.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Germany, Tubingen
Eberhard Karls Universität Tübingen
Renaut, André A.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
France
Bur. Intl. Gestion D'etud. P.
Touré-Ndouo, Fousseyni Samba
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Vaillant, Michel T.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
France, Bordeaux
Université de Bordeaux
Lawoko, M.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Yangari, Patrick
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Mayombo, Justice
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Lékoulou, Faustin
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Tshipamba, Paul
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Moukagni, R.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
France, Bordeaux
Université de Bordeaux
Millet, Pascal G.
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
Deloron, Philippe
Gabon, Franceville
Centre International de Recherches Medicales de Franceville
France, Marseille
Ird Institut de Recherche Pour le Developpement
Statistics
Citations: 51
Authors: 14
Affiliations: 7
Identifiers
Doi:
10.1016/S0001-706X(02)00266-8
ISSN:
0001706X
Research Areas
Infectious Diseases
Study Design
Cross Sectional Study
Cohort Study
Study Locations
Gabon