Trematodiases are important yet neglected tropical diseases, caused by trematode parasites with a multi-host life cycle, which typically involves a snail intermediate host. The many knowledge gaps regarding the trematode life cycles, pathology, and epidemiology complicate effective control. This work was initiated to inventory parasites as part of the One Health initiative, where human and animal trematodes are considered equally important, in order to map their distribution, detect high-risk locations and improve disease control. This paper describes the occurrence of parasitic infections in the Ouagadougou reservoirs. These reservoirs are under intensive market gardening. The infra- and component community of digenetic trematodes and other parasites in a freshwater gastropod community were examined over a 5-month period. A total of 1031 Thiaridae snails was collected. Among them, 109 belonging to 2 species were infected by larval trematodes. Seven different types of cercaria were found: xiphidiocercaria, furcocercous, megalurous cercaria, monostome cercaria, Armatae xiphidiocercaria, echinostome cercaria and gymnocephalus cercaria. In addition to trematode infections, nematode and oligochaete (Chaetogaster limnaei limnaei) infections have been reported during this investigation. The association of Chaetogaster limnaei limnaei with the snail intermediate host may be of value as a control measure against economically important parasitic diseases such as fascioliasis and schistosomiasis.

Thiaridae, Zoonotic, Trematodes, Cercariae, Chaetogaster limnaei limnaei, Ouagadougou