Profil saisonnier du recours aux soins palustres dans un contexte de lutte anti larvaire dans le district sanitaire de Nouna, au Burkina Faso

Abstract

A malaria control campaign using the biolarvicide Bacillus thuringiensis israelensis (Bti) was implemented in the Nouna health district in Burkina Faso. This paper analyses the seasonal pattern of malaria care use and then assesses the effect of Bti
on malaria transmission in the district. The data were obtained from the consultation registers of the district's health facilities. The seasonal pattern of health care seeking was analysed using the Seasonal-Trend decomposition using LOESS (STL). The double-difference method was used to assess the effect of Bti on healthcare use. Between 2013 and 2016, 75519 cases of malaria care seeking were recorded with an annual average of 18853 cases. The pattern of care seeking is permanent and
seasonal. Peaks occur during the rainy season. The STL decomposition of the profile showed a seasonal pattern with double peaks appearing in August and October for children and one peak appearing in October for adults. The double difference
showed that the effect of Bti is not noticeable on the seasonal use of malaria care.