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| http://dx.doi.org/10.1371/journal.pntd.0006552 | DOI Listing |
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Residual transmission of schistosomiasis in Ndikinimeki Health District (Centre Region, Cameroon) despite implementation of complementary control strategies: Prospects for elimination.
Parasite Epidemiol Control
February 2025
Higher Institute for Scientific and Medical Research (ISM), Yaoundé, Cameroon.
Schistosomiasis control currently relies on school-based preventive chemotherapy (PC) with praziquantel, which has been proven, unfortunately, insufficient to interrupt disease transmission in areas with persistent transmission. In the Ndikinimeki Health District (Centre Region, Cameroon), complementary strategies (community-based preventive chemotherapy, water sanitation, hygiene, and health education) have also been implemented to accelerate the interruption of schistosomiasis transmission in this focus. The assessment of the impact of this package of interventions revealed that only a few individuals were still infected with .
View Article and Find Full Text PDFSignificant Progress in the Study of African Freshwater Snails Over the Past 260 Years.
Ecol Evol
February 2025
Centre for Functional Biodiversity, School of Life Sciences University of KwaZulu-Natal Pietermaritzburg South Africa.
Globally, freshwater ecosystems are threatened. Research progress concerning African freshwater snails was reviewed using a systematic review process. Since 1757, the number of publications produced has increased, particularly in the last decade.
View Article and Find Full Text PDFThe distribution of certain permissive intermediate snail host species in freshwater is a crucial factor shaping transmission of intestinal schistosomiasis, a neglected tropical disease that causes much human suffering in Africa. To shed new light on southern Malawi, where cases of intestinal schistosomiasis have been found, repeated malacological surveys were conducted in Chikwawa and Nsanje Districts in the Lower Shire Valley, to detect and to characterize populations of Biomphalaria, the intermediate host for intestinal schistosomiasis. Sampling took place across a total of 45 freshwater sites, noting water conductivity, pH, temperature, total dissolved salts (TDS) and geographical elevation.
View Article and Find Full Text PDFStochastic processes govern gut bacterial community assembly in a Schistosoma mansoni-transmitting snail, Biomphalaria straminea.
PLoS Negl Trop Dis
February 2025
Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
Background: Studies have revealed extensive taxonomic classifications and patterns of gut microbial diversity in snails, with limited focus on community assembly processes. To better understand the balance between stochastic and deterministic processes in the snail gut microbial assembly and their associations with snail fitness, we used the freshwater snail Biomphalaria straminea as a model and analyzed the gut bacterial communities from 118 samples via high-throughput sequencing of the 16S rRNA gene.
Results: This study reveals that Proteobacteria and Bacteroidota dominate the gut microbiota of B.
Mating system of a vector of .
Curr Res Parasitol Vector Borne Dis
January 2025
Western University of Health Sciences, 200 Mullins Dr, Lebanon, OR, 97355, USA.
snails are intermediate hosts for schistosome parasites, which cause morbidity and mortality in humans worldwide. We aimed to determine the mating system of , a hermaphroditic vector of schistosomiasis in the African Great Lakes, with the goal of informing the design of genetic studies such as linkage mapping to improve genome assembly and genetic association studies to identify snail resistance genes. To determine the relative rates of outcrossing selfing, we assayed the progeny of experimental crosses of snails in the laboratory using a PCR and restriction enzyme digest to determine snail genotype and parentage.
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