ArticlePLoS neglected tropical diseases2022
Assessment of environmental contamination with soil-transmitted helminths life stages at school compounds, households and open markets in Jimma Town, Ethiopia.
Article in PLoS neglected tropical diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 28 citations in OpenAlex.
- Endemicity and environmental reservoirs of schistosomiasis and soil-transmitted helminth infections in Ghanaian rural communities.PLoS neglected tropical diseases · 2026Article
- Development, field-testing and optimization of tools to quantify soil-transmitted helminths in fecal sludge from school pit latrines in Ethiopia.PLoS neglected tropical diseases · 2026Article
- Intestinal Parasites in School Children in Rural and Urban Areas in Kavrepalanchok, Nepal.EcoHealth · 2026Article
- Parasitic Contamination of Fresh Vegetables Marketed and Cultivated in Small-Scale Farms in Hosanna Town and Its Surrounding Areas, Hadiya Zone, Ethiopia.Journal of parasitology research · 2026Article
- Gallbladder Ascariasis Presenting as Acalculous Biliary Colic.HCA healthcare journal of medicine · 2026Article
- Zoonotic Risk of Intestinal Parasites in Ghana's Protected Areas: A Nexus for Human-Nonhuman Primates-Dog Interactions.Journal of parasitology research · 2026Article
- Assessment of Environmental Contamination With Soil-Transmitted Helminth Eggs From Human and Animal Faeces in Southern Côte d'Ivoire: A Rapid Approach for Identifying High-Risk Communities.Journal of parasitology research · 2026Article
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- Survey of Refuse Disposal Practices, Geohelminth Contamination, and Vector Abundance at Dumpsites in Akure Metropolis, Nigeria.Journal of parasitology research · 2025Article
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- Soil surveillance for monitoring soil-transmitted helminths: Method development and field testing in three countries.PLoS neglected tropical diseases · 2024Article
- Article
- Distribution of helminth eggs in environmental and stool samples of farming households along Akaki River in Addis Ababa, Ethiopia.Tropical medicine and health · 2023Article
- Effects of Age, Gender and Soil-Transmitted Helminth Infection on Prevalence ofTropical medicine and infectious disease · 2023Article
- Molecular evidence of hookworms in public environment of Bangladesh.Scientific reports · 2023Article
- An Overview of Ascariasis Involvement in Gallbladder Disease: A Systematic Review of Case Reports.Cureus · 2022Review
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Authors and funding
11 authors at 4 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundIt remains largely unknown where and how infections with soil-transmitted helminths (STHs; Ascaris, Trichuris, Necator and Ancylostoma) occur. We therefore aimed to identify possible sources of infection by assessing the environmental contamination in an STH-endemic area.
methodsWe first performed a series of laboratory experiments designed to optimize a soil straining-flotation method to detect and quantify Ascaris and Trichuris eggs in soil, and to validate the diagnostic performance of the optimized method when followed by microscopy and qPCR. In a second phase, we applied this method to assess the level of STH contamination in 399 environmental samples collected from 10 school compounds, 50 households and 9 open markets in Jimma Town (Ethiopia). Subsequently, we explored associations between the environmental contamination and both the corresponding STH epidemiology at the level of the schools and the household characteristics. Finally, we assessed the knowledge, attitude and practice (KAP) towards STHs in school children. PRINCIPAL
findingsOur soil straining-flotation method has an analytical sensitivity of 50 eggs per 100 grams of soil and egg recovery rate of 36.0% (Ascaris) and 8.0% (Trichuris). The analysis of field samples with both microscopy and qPCR revealed the presence of 8 different helminth species of medical importance, including but not limited to the human STHs. There was a significant association between the environmental contamination and prevalence of any STH infections at the school level only. The KAP indicated a lack of knowledge and awareness of STHs. CONCLUSIONS/SIGNIFICANCE: Our optimized straining-flotation method has a moderate diagnostic performance and revealed that life stages of helminths are ubiquitous in the environment, which might be due to the poor sanitary facilities at both the schools and the households, and a poor level of KAP towards STHs. Further research is required to gain more insights into the contribution of these life stages to transmission.
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