Arid
DOI10.1186/s40249-021-00930-4
High prevalence of urinary schistosomiasis in a desert population: results from an exploratory study around the Ounianga lakes in Chad
Moser, Wendelin; Batil, Annour Adoum; Ott, Rebekka; Abderamane, Moussa; Clements, Ruth; Wampfler, Rahel; Poppert, Sven; Steinmann, Peter; Allan, Fiona; Greter, Helena
通讯作者Greter, H (corresponding author),Swiss Trop & Publ Hlth Inst, Basel, Switzerland.
来源期刊INFECTIOUS DISEASES OF POVERTY
ISSN2095-5162
EISSN2049-9957
出版年2022
卷号11期号:1
英文摘要Background: Researching a water-borne disease in the middle of the Sahara desert might not seem the most relevant concern. However, nomadic Sahelian pastoralists health concerns regarding their livestock and anecdotal reports about trematode infections of Fasciola spp. and Schistosoma spp. in desert-raised animals justified an exploratory study focusing on the lakes of Ounianga in Northern Chad. The aim was to test whether trematode parasites such as Schistosoma spp. occur in human populations living around the Sahara desert lakes of Ounianga Kebir and Ounianga Serir in northern Chad. Methods: The study was carried out in January 2019 and comprised of three components. First, a cross sectional survey based on a random sample drawn from the population to detect infections with S. haematobium and S. mansoni; second, focus group discussions exploring disease priorities, access to health and health seeking behaviour; and third, surveying water contact sites for intermediate host snails. Samples of trematode parasites and snails were confirmed on species level by molecular genetic methods. For parasitological and malacological surveys descriptive statistics were performed. Qualitative data analysis included the full review of all transcripts, followed by a descriptive and explorative thematic analysis. Results: Among 258 participants, the overall S. haematobium prevalence using urine filtration was 39.2% [95% confidence interval (CI): 33.5-45.1%], with 51.5% of the infected suffering from heavy infection. The intermediate host snail of S. haematobium (Bulinus truncatus) occurred at water contact sites near both study villages, revealing the potential for local transmission. Although a positive S. mansoni point-of-care circulating cathodic antigen (POC-CCA) test result was obtained from 8.6% (95% CI 5.7-12.8%) of the samples, no intermediate host snails of S. mansoni were found, and the relevance of S. mansoni remains uncertain. Qualitative findings underline the importance of morbidity caused by urinary schistosomiasis, and the lack of access to diagnostics and treatment as a major health concern. Conclusions: This research revealed a high prevalence of urinary schistosomiasis in the population living around the lakes of Ounianga in the Sahara, a United Nations Educational, Scientific and Cultural Organization (UNESCO) world heritage site in Chad. Despite the high public health importance of the associated morbidity expressed by the population, there is no access to diagnostics and treatment. Further work is needed to develop and test a contextadapted intervention.
英文关键词Bulinus truncatus Chad Malacology Ounianga POC-CCA Prevalence Sahara Schistosoma bovis Schistosoma haematobium Schistosomiasis
类型Article
语种英语
开放获取类型gold, Green Published
收录类别SCI-E
WOS记录号WOS:000739961800001
WOS关键词HEALTH ; INFECTIONS ; DIAGNOSIS ; MANSONI ; SNAILS ; SAHEL
WOS类目Infectious Diseases ; Parasitology ; Tropical Medicine
WOS研究方向Infectious Diseases ; Parasitology ; Tropical Medicine
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/376597
作者单位[Moser, Wendelin; Ott, Rebekka; Wampfler, Rahel; Poppert, Sven; Steinmann, Peter; Greter, Helena] Swiss Trop & Publ Hlth Inst, Basel, Switzerland; [Moser, Wendelin; Ott, Rebekka; Wampfler, Rahel; Poppert, Sven; Steinmann, Peter; Greter, Helena] Univ Basel, Basel, Switzerland; [Batil, Annour Adoum] Inst Rech Elevage Dev, Ndjamena, Chad; [Abderamane, Moussa] Univ Ndjamena, Dept Geol, Ndjamena, Chad; [Clements, Ruth; Allan, Fiona] Nat Hist Museum, Dept Life Sci, London, England
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GB/T 7714
Moser, Wendelin,Batil, Annour Adoum,Ott, Rebekka,et al. High prevalence of urinary schistosomiasis in a desert population: results from an exploratory study around the Ounianga lakes in Chad[J],2022,11(1).
APA Moser, Wendelin.,Batil, Annour Adoum.,Ott, Rebekka.,Abderamane, Moussa.,Clements, Ruth.,...&Greter, Helena.(2022).High prevalence of urinary schistosomiasis in a desert population: results from an exploratory study around the Ounianga lakes in Chad.INFECTIOUS DISEASES OF POVERTY,11(1).
MLA Moser, Wendelin,et al."High prevalence of urinary schistosomiasis in a desert population: results from an exploratory study around the Ounianga lakes in Chad".INFECTIOUS DISEASES OF POVERTY 11.1(2022).
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