Parasitological Surveys on Malaria in Rural Balombo (Angola) in 2007-2008: Base Line Data for a Malaria Vector Control Project

International audience; Study Design: Balombo area (Angola) f from each other to avoid the possibility of active flights of the mosquitoes and “contamination” of treated or control villages.Methodology: Classical Cross Sectional Surveys (CSS) were symptomless children 10.000 par./ml) were noticed in children, even very young, without clinical symptoms. Classical seasonal variations of plasmodic index and some variations according to age group were observed. Gametocytic indices showed relatively stable levels with age group.Conclusion: Statistical analysis showed that “under 15 years” age group could be a relevant indicator to evaluate the efficacy of a vector control programme and it increases the sample size allowing to perceive even small variations induced by vector control. Variability of parasitological index according to age groups, villages, season, confirmed the importance of regularly surveys to know precisely the situation before the implementation of control operations for reliable further evaluation. Missing such base line data induced the failure of a former vector control project in Angola.