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Human-water interactions associated to cercarial emergence pattern and their influences on urinary schistosomiasis transmission in two endemic areas in Mali

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Infectious Diseases of Poverty 2024年第4期13卷 103-104页

作者： Bakary Sidibe Privat Agniwo Assitan Diakite Boris Agossou Eyaton-olodj Segnito Savassi Safiatou Niare Doumbo Ahristode Akplogan hassim guindo Moudachirou Ibikounle Laurent Dembele Abdoulaye Djimde Jerome Boissier Abdoulaye Dabo Department of Epidemiology of Infectious Diseases Faculty of Pharmacy University of Sciences Techniques and Technologies of Bamako IRL 3189 Bamako Mali Centre de Recherche Pour La Lutte Contre Les Maladies Infectieuses Tropicales (CReMIT/TIDRC) Université d’Abomey-Calavi Abomey-Calavi Bénin IHPE Univ. Montpellier CNRS Ifremer Univ. Perpignan Via Domitia Perpignan France

Background Mali is known to be a schistosomiasis-endemic country with a limited supply of clean *** has forced many communities to rely on open freshwater bodies for many human-water contact(HWC)***,the relationship between contact with these water systems and the level of schistosome infection is cur-rently receiving limited *** study assessed human-water interactions including cercarial emergence pat-tern and their influences on urinary schistosomiasis transmission in two communities in the Kayes district of *** We carried out a parasitological study frst in children in September 2021,then a cross-sectional study of quantitative observations of human-water contact activities in the population,and finally a study of snail infectiv-ity at contact points in September *** study took place in two communities,Fangoune Bamanan and Diakalel in the Kayes region of western *** chronobiological study focused on cercarial release from naturally infected *** cercariae were molecularly genotyped by targeting the cox1 region,and the ITS and 18S ribosmal DNA gene(18S rDNA)regions of the *** between sociodemographic parameters,human water-contact points and hematuria were established using multivariate statistical analysis or the logistic regression *** The main factor predisposing the 97 participants to water contact was domestic activity(62.9%).Of the 378 snails collected at 14 sampling sites,27(7.1%)excreted schistosome cercariae,with 15.0%(19/126)at Fangoune Bamanan and 3.3%(8/252)at *** release of Schistosoma cercariae shows three different patterns in Fangoune Bamanan:(i)an early release peak(6:00-8:00 AM),(i)a mid-day release peak(10:00 AM-12:00 PM)and(ili)a double peak:(6:00-8:00 AM)and(6:00-8:00 PM)cercariae release;and two release patterns in Diakalel:early release(6:00-8:00 AM)and(il)mid-day release(12:00-2:00 PM).All cercariae released during early diurnal(6:00-8:00 AM)or nocturnal

关键词： Schistosomiasis Chronobiology Cercarial emission Snail Water contact Mali

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Ultrasound aspects and risk factors associated with urogenital schistosomiasis among primary school children in Mali

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Infectious Diseases of Poverty 2023年第2期12卷 133-133页

作者： Privat Agniwo Bakary Sidibé Assitan Diakité Safiatou Doumbo Niaré hassim guindo Ahristode Akplogan Moudachirou Ibikounlé Jérôme Boissier Abdoulaye Dabo Department of Epidemiology of Infectious Diseases Faculty of PharmacyIRl 3189(USTTB/UCAD/UGB/CNRST/CNRS)University of SciencesTechniques and Technologies of BamakoBamakoMali Interactions Hôtes-Pathogènes-Environnements(IHPE) Univ.MontpellierCNRSIfremerUniv.Perpignan Via DomitiaPerpignanFrance Centre de Recherche pour la lutte contre les Maladies Infectieuses Tropicales(CReMIT/TIDRC) University of Abomey-CalaviAbomey CalaviBenin

Background Urogenital schistosomiasis is endemic in Mali and is a major cause of serious morbidity in large parts of the *** disease is responsible for many socio-economic and public health *** aim of this study was to investigate the impact of the disease on morbidity and to describe demographic and socioeconomic factors in relation to the status of children with urogenital schistosomiasis in *** We conducted a cross-sectional study in November 2021 of 971 children aged 6 to 14 years selected at random from six schools in three districts in the Kayes Region of *** and socioeconomic data were collected on survey *** data were collected following a medical *** was systematically searched for through the use of *** search for Schistosoma haematobium eggs in urine was done via the filtration *** urinary tract was examined by *** between each of these variables and disease infection were tested using multivariate logistic *** The overall prevalence of urinary schistosomiasis detected was 50.2%.The average intensity of infection was 36 eggs/10 ml of *** associated risk factors for urogenital schistosomiasis showed that children who bathed,used the river/pond as a domestic water source,and who habitually urinated in the river/pond were more affected(P<0.05).Children with farming parents were most affected(P=0.032).The collection of clinical signs revealed that boys had more pollakiuria(58.6%)and dysuria(46.4%)than *** data showed that focal lesion rates were recorded in all villages with the lowest rate in Diakalel(56.1%).Ultrasound and parasitological findings showed that irregularity and thickening were strongly associated with urinary schistosomiasis(P<0.0001).Conclusions Schistosoma haematobium infection was still endemic in the study site despite more than a decade of mass treatment with ***,the high percentage of symp

关键词： Schistosoma haematobium Morbidity Prevalence Risk factor Mali

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