Fig. 1

Map of the Republic of the Congo (a) showing the localities surveyed in Goma Tsé-Tsé District (b) and Madibou District (c). In Goma Tsé-Tsé District, the red dots represent the selected villages (Ntoula and Djoumouna), and in Madibou district the red striped area represents the urban area (Mayanga) selected for the survey