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Soil transmitted helminth

Jean Frantz Lemoine, Anne Marie Desormeaux, Franck Monestime, Carl Renad Fayette, Luccene Desir, Abdel Nasser Direny, Sarah Carciunoiu, Lior Miller, Alaine Knipes, Patrick Lammie, Penelope Smith, Melissa Stockton, Lily Trofimovich, Kalpana Bhandari, Richard Reithinger, Kathryn Crowley, Eric Ottesen, Margaret Baker
Lymphatic filariasis (LF) and soil-transmitted helminths (STH) have been targeted since 2000 in Haiti, with a strong mass drug administration (MDA) program led by the Ministry of Public Health and Population and its collaborating international partners. By 2012, Haiti's neglected tropical disease (NTD) program had reached full national scale, and with such consistently good epidemiological coverage that it is now able to stop treatment for LF throughout almost all of the country. Essential to this success have been in the detail of how MDAs were implemented...
October 2016: PLoS Neglected Tropical Diseases
Fabio Macchioni, Higinio Segundo, Valentina Totino, Simona Gabrielli, Patricia Rojas, Mimmo Roselli, Grover Adolfo Paredes, Mario Masana, Alessandro Bartoloni, Gabriella Cancrini
INTRODUCTION: In 2013 a coproparasitological survey was carried out in two rural communities of the Bolivian Chaco to determine the prevalence of intestinal parasitic infections (IPIs) and to investigate on possible infection drivers through a questionnaire interview. METHODOLOGY: Faecal samples were examined by microscopy. Samples positive for Entamoeba histolytica complex and Blastocystis were molecularly examined to identify the species/subtypes involved. RESULTS: The overall infection rate was 86%, identical in both communities and mostly due to protozoa...
September 30, 2016: Journal of Infection in Developing Countries
M Bagayan, D Zongo, A Oueda, H Sorgho, B Savadogo, F Drabo, A Ouedraogo, J N Poda, B G Kabre, Y Zhang
To determine the current status of schistosomiasis and soil-transmitted helminth (STH) infections among schoolchildren after 10 years of mass treatment with praziquantel. Parasitological surveys were conducted in 2013 in 22 primary schools located in 11 regions of Burkina Faso. Urine filtration methods and Kato-Katz techniques for stool were used to detect the eggs of Schistosoma hæmatobium, Schistosoma mansoni, and STH. 3514 schoolchildren aged from 7 to 11 (1.415 ± 9) years participated in the study. The prevalence of S...
August 1, 2016: Médecine et Santé Tropicales
C Nithikathkul, A Trevanich, T Wongsaroj, C Wongsawad, P Reungsang
At the beginning of the new millennium, helminth infections continue to be prevalent, particularly among impoverished populations. This study attempts to create the first health informatics model of helminthiasis in Thailand. The authors investigate how a health informatics model could be used to predict the control and eradication in a national control campaign. Fish-borne helminthiasis caused by Opisthorchis viverrini remains a major public health problem in many parts of South-East Asia, including Thailand, Lao PDR, Vietnam and Cambodia...
September 26, 2016: Journal of Helminthology
Giuseppina Ortu, Mohamad Assoum, Udo Wittmann, Sarah Knowles, Michelle Clements, Onésime Ndayishimiye, Maria-Gloria Basáñez, Colleen Lau, Archie Clements, Alan Fenwick, Ricardo J Soares Magalhaes
BACKGROUND: Soil-transmitted helminth (STH) infections are amongst the most prevalent infections in the world. Mass drug administration (MDA) programmes have become the most commonly used national interventions for endemic countries to achieve elimination. This paper aims to describe the effect of an 8-year MDA programme on the prevalence, intensity of infection and co-infection of STH in Burundi from 2007 to 2014 and critically appraise the trajectory towards STH elimination in the country...
2016: Parasites & Vectors
Bui Khac Hung, Nguyen Van De, Le Van Duyet, Jong-Yil Chai
To know the infection status of helminths in primary schoolchildren of southern parts of Vietnam, we performed an epidemiological study in Krong Pac district, Dak Lak Province, Vietnam. A total of 1,206 stool specimens were collected from ethnic Ede schoolchildren in 4 primary schools in 2015 and examined by the Kato-Katz technique. In addition, stool cultures were done by the Harada-Mori method to obtain hookworm larvae and then to clarify the species of hookworms infected. The results showed that the helminth infection rate was 25...
August 2016: Korean Journal of Parasitology
Pelagie M Boko, Moudachirou Ibikounle, Ablawa Onzo-Aboki, Jean-Jacques Tougoue, Yollande Sissinto, Wilfrid Batcho, Dorothe Kinde-Gazard, Achille Kabore
In 2013, Benin developed strategies to control neglected tropical diseases and one of the first step was the disease mapping of the entire country in order to identify endemic districts of schistosomiasis and soil transmitted helminths (STH). This study was carried out in 30 of the 77 districts of Benin. Of these 30 districts 22 were previously treated for Lymphatic Filariasis (LF) using the Ivermectin and Albendazole combination. In each district, five schools were selected and 50 children aged 8 to 14 years were sampled in each school, making a total of 250 children sampled in the district...
2016: PloS One
Jacinta Wairimu Macharia, Zipporah W Ng'ang'a, Sammy Michugu Njenga
INTRODUCTION: helminthic infections caused by soil-transmitted helminths (STH) and schistosomes are among the most prevalent afflictions of humans who live in areas of poverty. An operational research was undertaken in 5 villages of Kwale County during a pilot control programme which included both the adults and school going children. Willingness of community members to participate in the treatment as well as in the research is critical. A cross sectional study sought to determine factors influencing community participation in control and related operational research and assess the treatment coverage for urogenital schistosomiasis and hookworms in rural villages of Kwale County...
2016: Pan African Medical Journal
Ernest Cudjoe Opoku, Annette Olsen, Edmund Browne, Abraham Hodgson, John K Awoonor-Williams, Lawrence Yelifari, John Williams, Pascal Magnussen
BACKGROUND: The benefits of integrated control of malaria, schistosomiasis, and soil-transmitted helminth infections have not been fully explored in Ghanaian schoolchildren. OBJECTIVE: To assess the impact of co-administered artemether-lumefantrine plus albendazole, and artemether-lumefantrine plus albendazole plus praziquantel compared to albendazole plus praziquantel on anaemia, sustained attention, and recall in schoolchildren. DESIGN: This three-arm, open-label intervention study was carried out in Ghana among class three schoolchildren...
2016: Global Health Action
Suzy J Campbell, Susana V Nery, Catherine A D'Este, Darren J Gray, James S McCarthy, Rebecca J Traub, Ross M Andrews, Stacey Llewellyn, Andrew J Vallely, Gail M Williams, Salvador Amaral, Archie Ca Clements
There is little evidence on prevalence or risk factors for soil transmitted helminth (STH) infections in Timor-Leste. This study describes the epidemiology, water, sanitation and hygiene (WASH), and socioeconomic risk factors of STH and intestinal protozoa among communities in Manufahi District, Timor-Leste. As part of a cluster randomised controlled trial (RCT), a baseline cross-sectional survey was conducted across 18 villages, with data from six additional villages. Stool samples were assessed for STH and protozoal infections using quantitative PCR (qPCR) and questionnaires administered to collect WASH and socioeconomic data...
September 8, 2016: International Journal for Parasitology
C Muñoz-Antoli, A Pavón, P Pérez, R Toledo, J G Esteban
Soil-transmitted helminth (STH) prevalence, intensity, polyparasitism and co-infections in 425 children from 3 schools of Laguna de Perlas (Nicaragua) were investigated. Single stool samples were analysed by the formalin-ether method and the Kato-Katz. A total of 402 (94.6%) children were infected. Trichuris trichiura 308 (72.4%), Ascaris lumbricoides 115 (27.1%) and Hookworms 54 (12.7%) were the most prevalent STHs. Polyparasitism (322; 75.8%) with two species was most prevalent (109; 25.6%). T. trichiura with A...
September 10, 2016: Journal of Tropical Pediatrics
Adel M Farghly, Sabah M A Mohamed, Sara A Abdel-Rahman, Faten E Mohammed, Enas S El-Bahaie, Mahmoud A El-Shafey
Soil transmitted helminths are highly prevalent throughout the developing countries of the world and Egypt is categorized as one of the developing countries. This study aimed to detect the relation between the presence and prevalence of STH in the soil and their reflection on the prevalence among school-children living in rural and urban areas in Zagazig district, Egypt. The present study was carried out on (859) school-children aged 6-13 years in Zagazig district all over the year 2013. They were subjected to stool examination...
September 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
Maryam Hassan Esfehani, Abdolhadi Jahanshahi, Amirhossein Karimi
Ascariasis lumbricoides is the most common soil-transmitted helminth worldwide and most often is asymptomatic, although it can present with abdominal pain, malabsorption and growth failure, complete or partial obstraction in small bowel and biliary system and etc. Accidental encounters with ascaris during emergent abdominal surgeries are very rare and have been reported in less than a handful of papers. In this report, we describe this rare event from a country with low prevalence of this infection, and then review the literatures and clarify the possible challenges for surgeons during operation and postoperative follow-up...
July 2016: Chirurgia
Dora Buonfrate, Federico Gobbi, Anna Beltrame, Zeno Bisoffi
Strongyloides stercoralis is a soil-transmitted helminth widely diffused in tropical areas. Chronic infection is usually characterized by absent or mild symptoms, but immunocompromised subjects are at risk of developing a severe syndrome that can be fatal if not promptly treated. We report a case of S. stercoralis infection causing severe anemia (hemoglobin 4.9 g/dL) and a lung nodule in a 14-year-old girl of Ethiopian origin adopted by an Italian couple. Severe anemia due to strongyloidiasis has been rarely reported, and mostly in severely ill patients, whereas our patient was immunocompetent and in good general conditions...
September 6, 2016: American Journal of Tropical Medicine and Hygiene
Ivan Müller, Peiling Yap, Peter Steinmann, Bruce P Damons, Christian Schindler, Harald Seelig, Nan S N Htun, Nicole Probst-Hensch, Markus Gerber, Rosa du Randt, Uwe Pühse, Cheryl Walter, Jürg Utzinger
BACKGROUND: As traditional lifestyle and diets change with social and economic development, disadvantaged communities in low- and middle-income countries increasingly face a double burden of communicable and non-communicable diseases. We studied the relationship between physical fitness and infections with soil-transmitted helminths (STHs), intestinal protozoa and Helicobacter pylori among schoolchildren in Port Elizabeth, South Africa. METHODS: We conducted a cross-sectional survey among 1009 children, aged 9 to 12 years, from eight primary schools in socioeconomically disadvantaged neighbourhoods of Port Elizabeth...
2016: Parasites & Vectors
Jean T Coulibaly, Mamadou Ouattara, Sören L Becker, Nathan C Lo, Jennifer Keiser, Eliézer K N'Goran, Davide Ianniello, Laura Rinaldi, Giuseppe Cringoli, Jürg Utzinger
Accurate diagnostic tools for human helminthiasis are crucial for epidemiological surveys, improved patient management, and evaluation of community-based intervention studies. However, the diagnosis of intestinal schistosomiasis and soil-transmitted helminthiasis heavily relies on stool microscopy using the Kato-Katz technique, which has a low sensitivity. The Mini-FLOTAC method is an alternative microscopy-based technique, but its diagnostic performance using sodium acetate-acetic acid-formalin-(SAF)-fixed stool specimens has not been validated...
August 31, 2016: Acta Tropica
Khov Kuong, Marion Fiorentino, Marlene Perignon, Chhoun Chamnan, Jacques Berger, Muth Sinuon, Vann Molyden, Kurt Burja, Megan Parker, Sou Chheng Ly, Henrik Friis, Nanna Roos, Frank T Wieringa
Soil-transmitted helminth (STH) infection has been associated with lower cognitive performance of schoolchildren. To identify pathways through which STH infection might affect school performance, baseline data from a large rice-fortification trial in Cambodian schoolchildren were used to investigate associations between STH infection, micronutrient status, anemia, and cognitive performance. Complete data on anthropometry, cognitive performance, and micronutrient status were available for 1,760 schoolchildren, 6-16 years of age...
October 5, 2016: American Journal of Tropical Medicine and Hygiene
Armelle Forrer, Virak Khieu, Christian Schindler, Fabian Schär, Hanspeter Marti, Meng Chuor Char, Sinuon Muth, Peter Odermatt
BACKGROUND: Strongyloides stercoralis is the only soil-transmitted helminth with the ability to replicate within its host, leading to long-lasting and potentially fatal infections. It is ubiquitous and its worldwide prevalence has recently been estimated to be at least half that of hookworm. Information on the epidemiology of S. stercoralis remains scarce and modalities for its large-scale control are yet to be determined. METHODOLOGY/PRINCIPAL FINDINGS: A community-based two-year cohort study was conducted among the general population in a rural province in North Cambodia...
August 2016: PLoS Neglected Tropical Diseases
Joseane Balan Da Silva, Gleison Daion Piovezana Bossolani, Camila Piva, Greicy Brisa Malaquias Dias, Jancarlo Gomes Ferreira, Diogo Francisco Rossoni, Lúcio Tadeu Mota, Max Jean Ornelas Toledo
The spatial distribution of enteroparasitosis in an indigenous village from Paraná was evaluated to identify areas of risk for these infections. A cross-sectional study (from November 2010 to June 2011) was performed using Three Faecal Test(®) and Kato & Katz method and a questionnaire on housing and hygiene conditions was administered. Local geostatistical analyses were performed to determine the spatial distribution of intestinal parasitic infections. The overall prevalence of enteroparasites was 67.2 % (457/680), and the most prevalent taxa were Ascaris lumbricoides (48...
October 2016: International Journal of Environmental Health Research
Dora Buonfrate, Mara Baldissera, Fabrizio Abrescia, Matteo Bassetti, Giacomo Caramaschi, Mario Giobbia, Marta Mascarello, Paola Rodari, Novella Scattolo, Giuseppina Napoletano, Zeno Bisoffi
Strongyloides stercoralis is a soil-transmitted helminth widely diffused in tropical and subtropical regions of the world. Autochthonous cases have been also diagnosed sporadically in areas of temperate climate. We aimed at defining the epidemiology of strongyloidiasis in immigrants and Italians living in three northern Italian Regions. Screening for S. stercoralis infection was done with serology, confirmation tests were a second serological method or stool agar culture. A case-control approach was adopted and patients with a peripheral eosinophil count ≥ 500/mcL were classified as cases...
August 4, 2016: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
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