Information Center: 06/2006
Plasmodium diversity in non-malaria individuals from the Bioko Island in Equatorial Guinea (West Central-Africa).
In this paper we analyse the Plasmodium sp. prevalence in three villages with different isolation status on the island of Bioko (Equatorial Guinea) where malaria is a hyper-endemic disease. We also describe the genetic diversity of P. falciparum, using several plasmodia proteins as markers which show a high degree of polymorphism (MSP-1 and MSP-2). The results obtained from three different populations
are compared in order to establish the impact of human movements and interventions.
Economic and social development indicators and discussions published annually by the IMF.
An economic overview and analysis of Equatorial Guinea by the IMF.
Reduction in Infection with Plasmodium Falciparum One Year after the Introduction of Malaria Control Interventions on Bioko Island, Equatorial Guinea
The Bioko Island Malaria Control Project was initiated in 2003 to substantially reduce malaria on the island of Bioko in Equatorial Guinea. The intervention consisted of generalized indoor residual spraying during the first year of the project. Case management and related measures were introduced during the second year. Two large household and parasitemia surveys of children 2 to < 15 years of age were carried out in 2004 and 2005, respectively, to assess the effect of the intervention after the first year. Patient records were collected retrospectively from one district hospital and analyzed for a comparison of pre-intervention and post-intervention periods. Overall mean prevalence of P. falciparum infection reduced from 46% (95% confidence interval [CI] = 40–51%) at baseline in 2004 to 31% (95% CI = 24–40%) in 2005 (P < 0.001). When the 12-month pre-intervention period was compared with the 12-month post-intervention period, there was a modest but statistically significant reduction in the number of malaria cases among hospital patients.