An entomological study was conducted during the construction of a small hydro-agricultural dam at Raffierkro near Bouaké, in central Côte d’Ivoire, between June 2007 and November 2009. The objective of this research was to evaluate the variation in specific diversity, abundance and nuisance of mosquitoes species in correlation with the different stages of the dam implementation. Larvae were collected using a ‘dipping’ sampling method in irrigation canals, stagnant water footprints and fish breeding ponds to determine specific diversity. Adult mosquitoes were captured on human bait over 2 to 3 consecutive nights. A total of 20,925 adult mosquitoes and 489 larvae were collected, divided into 6 genera and 21 species, with the most prevalent being Anopheles gambiae and Mansonia africana. Abundances exhibited considerable variation from one year to the next, with a marked increase during the rice-growing season, which was accompanied by a significant nuisance, particularly in localities in proximity to the dam and rice-growing facilities. This study highlights the impact of the facilities on culicid dynamics, with potential implications for disease transmission.

Helminthiasis is a major public health problem in Africa, particularly in Côte d'Ivoire. This study was conducted at the University Félix HOUPHOUËT-BOIGNY in southern Côte d'Ivoire. It aims to assess the epidemiological status of Ascaris lumbricoides and Trichuris trichiura infections in students at the University Félix HOUPHOUËT-BOIGNY. The survey involved 226 students sampled in 03 university courses. Stool samples were taken. Feces were analysed by the Mini-Flotac method with an flotation solution consisting of analytical salts (NaCl) with a density of 1.2. The results of stool analysis revealed a prevalence of 23.45% for Ascaris lumbricoides infection and 16.81% for Trichirus trichiura infection, respectively. The prevalences of Ascaris lumbricoides and Trichirus trichiura infections did not differ significantly by sex and age group. All infested students had a low infestation density (100 %) for Ascaris lumbricoides and Trichirus trichiura infections. A questionnaire was sent to the students to collect information on the transmission of Ascaris lumbricoides and Trichirus trichiura infections. The main factors of transmission, including toilet attendance and toilet cleaning, were incriminated. This study assessed the level of endemicity of Ascaris lumbricoides and Trichirus trichiura infections at the university and will help to consider appropriate means for the control of these parasitic diseases.