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Soil transmitted helminth

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https://www.readbyqxmd.com/read/27903301/high-prevalence-of-strongyloides-stercoralis-in-school-aged-children-in-a-rural-highland-of-north-western-ethiopia-the-role-of-intensive-diagnostic-work-up
#1
Aranzazu Amor, Esperanza Rodriguez, José M Saugar, Ana Arroyo, Beatriz López-Quintana, Bayeh Abera, Mulat Yimer, Endalew Yizengaw, Derejew Zewdie, Zimman Ayehubizu, Tadesse Hailu, Wondemagegn Mulu, Adriana Echazú, Alejandro J Krolewieki, Pilar Aparicio, Zaida Herrador, Melaku Anegagrie, Agustín Benito
BACKGROUND: Soil-transmitted helminthiases (hookworms, Ascaris lumbricoides and Trichuris trichiura) are extremely prevalent in school-aged children living in poor sanitary conditions. Recent epidemiological data suggest that Strongyloides stercoralis is highly unreported. However, accurate data are essential for conducting interventions aimed at introducing control and elimination programmes. METHODS: We conducted a cross-sectional survey of 396 randomly selected school-aged children in Amhara region in rural area in north-western Ethiopia, to assess the prevalence of S...
December 1, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27895280/effectiveness-of-albendazole-for-hookworm-varies-widely-by-community-and-correlates-with-nutritional-factors-a-cross-sectional-study-of-school-age-children-in-ghana
#2
Debbie Humphries, Sara Nguyen, Sunny Kumar, Josephine E Quagraine, Joseph Otchere, Lisa M Harrison, Michael Wilson, Michael Cappello
Mass drug administration (MDA) targeting school-age children is recommended by the World Health Organization for the global control of soil-transmitted helminth (STH) infections. Although considered safe and cost-effective to deliver, benzimidazole anthelminthics are variably effective against the three most common STNs, and widespread use has raised concern about the potential for emerging resistance. To identify factors mediating response to albendazole, we conducted a cross-sectional study of hookworm infection in the Kintampo North Municipality of Ghana in 2011...
November 28, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27884213/regional-variation-in-ascaris-lumbricoides-and-trichuris-trichiura-infections-by-age-cohort-and-sex-effects-of-market-integration-among-the-indigenous-shuar-of-amazonian-ecuador
#3
Theresa E Gildner, Tara J Cepon-Robins, Melissa A Liebert, Samuel S Urlacher, Felicia C Madimenos, J Josh Snodgrass, Lawrence S Sugiyama
BACKGROUND: Soil-transmitted helminth (STH) infection peaks during childhood and varies by sex. The impact of market integration (MI) (increasing production for and consumption from a market-based economy) on these infection patterns, however, is unclear. In this study, STH infection is examined by sex and age among indigenous Shuar inhabiting two regions of Amazonian Ecuador: (1) the modestly market-integrated Upano Valley (UV) and (2) the more traditional Cross-Cutucú (CC) region. METHODS: Kato-Katz fecal smears were examined for parasite presence and infection intensity...
November 24, 2016: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/27882241/immune-profile-of-honduran-schoolchildren-with-intestinal-parasites-the-skewed-response-against-geohelminths
#4
José Antonio Gabrie, María Mercedes Rueda, Carol Anahelka Rodríguez, Maritza Canales, Ana Lourdes Sanchez
Soil-transmitted helminth infections typically induce a type-2 immune response (Th2), but no immunoepidemiological studies have been undertaken in Honduras, an endemic country where the main control strategy is children's annual deworming. We aimed to characterize the immune profile of Honduran schoolchildren harbouring these parasitoses. Demographic and epidemiological data were obtained through a survey; nutritional status was assessed through anthropometry; intestinal parasites were diagnosed by formol-ether and Kato-Katz; and blood samples were collected to determine immunological markers including Th1/Th2 cytokines, IgE, and eosinophil levels...
2016: Journal of Parasitology Research
https://www.readbyqxmd.com/read/27881115/intestinal-polyparasitism-with-special-emphasis-to-soil-transmitted-helminths-among-residents-around-gilgel-gibe-dam-southwest-ethiopia-a-community-based-survey
#5
Zeleke Mekonnen, Sultan Suleman, Abdissa Biruksew, Tamirat Tefera, Legese Chelkeba
BACKGROUND: One third of the world population is estimated to be infected with intestinal parasites. The most affected people are children and the poor people living in tropics and subtropics. Polyparasitism (the concurrent infection with multiple intestinal parasite species) is found to be the norm among the same population although accurate estimate of its magnitude is unknown. It was found that polyparasitism might have a greater impact on morbidity than single species infection which might also increase susceptibility to other infections...
November 23, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27842865/monitoring-the-efficacy-of-drugs-for-neglected-tropical-diseases-controlled-by-preventive-chemotherapy
#6
REVIEW
M Albonico, B Levecke, P T LoVerde, A Montresor, R Prichard, J Vercruysse, J P Webster
In the last decade, pharmaceutical companies, governments and global health organisations under the leadership of the World Health Organization (WHO) have pledged large-scale donations of anthelmintic drugs, including ivermectin (IVM), praziquantel (PZQ), albendazole (ALB) and mebendazole (MEB). This worldwide scale-up in drug donations calls for strong monitoring systems to detect any changes in anthelmintic drug efficacy. This review reports on the outcome of the WHO Global Working Group on Monitoring of Neglected Tropical Diseases Drug Efficacy, which consists of three subgroups: (i) soil-transmitted helminthiases (ALB and MEB); (ii) onchocerciasis and lymphatic filariasis (IVM); and (iii) schistosomiasis (PZQ)...
December 2015: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27821692/combining-footwear-with-public-health-iconography-to-prevent-soil-transmitted-helminth-infections
#7
Sarah B Paige, Sagan Friant, Lucie Clech, Carly Malavé, Catherine Kemigabo, Richard Obeti, Tony L Goldberg
Shoes are effective for blocking soil-transmitted helminths (STHs) that penetrate the skin. Unfortunately, shoe-wearing is uncommon in many areas where STHs are prevalent, in part because local populations are unaware of the health benefits of wearing shoes. This is especially true in low-literacy populations, where information dissemination through written m essages is not possible. We launched a public health intervention that combines a public health image with sandals. The image is a "lenticular image" that combines two alternating pictures to depict the efficacy of shoes for preventing STH infection...
November 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27806464/determination-of-geohelminthiasis-and-its-association-with-allergic-sensitization-among-selected-children-in-batangas-philippines
#8
Carina R Magbojos, Shereen O Chua, Charlene R Alegria, Faustina C Macalalad, Anne Camille R Malayba, Alyssa Andrea D Mandigma, Oliver Shane R Dumaoal
Several studies have explored the cross-reactivity between geohelminthiasis and allergy which share the same immune response in humans by triggering the increase in serum IgE level. Yet, the role of soil-transmitted intestinal parasitism as a protective or contributing factor for allergy remains inconclusive. In this study, the association of geohelminthiasis with allergic sensitization was investigated in a cohort of 50 children aged 5 to 12 years old residing in the areas of Batangas, Philippines where parasitism is prevalent...
June 30, 2016: Global Journal of Health Science
https://www.readbyqxmd.com/read/27756457/the-role-of-more-sensitive-helminth-diagnostics-in-mass-drug-administration-campaigns-elimination-and-health-impacts
#9
G F Medley, H C Turner, R F Baggaley, C Holland, T D Hollingsworth
Diagnostics play a crucial role in determining treatment protocols and evaluating success of mass drug administration (MDA) programmes used to control soil-transmitted helminths (STHs). The current diagnostic, Kato-Katz, relies on inexpensive, reusable materials and can be used in the field, but only trained microscopists can read slides. This diagnostic always underestimates the true prevalence of infection, and the accuracy worsens as the true prevalence falls. We investigate how more sensitive diagnostics would impact on the management and life cycle of MDA programmes, including number of mass treatment rounds, health impact, number of unnecessary treatments and probability of elimination...
2016: Advances in Parasitology
https://www.readbyqxmd.com/read/27756454/soil-transmitted-helminths-mathematical-models-of-transmission-the-impact-of-mass-drug-administration-and-transmission-elimination-criteria
#10
J E Truscott, H C Turner, S H Farrell, R M Anderson
Infections caused by soil-transmitted helminthias (STHs) affect over a billion people worldwide, causing anaemia and having a large social and economic impact through poor educational outcomes. They are identified in the World Health Organization (WHO) 2020 goals for neglected tropical diseases as a target for renewed effort to ameliorate their global public health burden through mass drug administration (MDA) and water and hygiene improvement. In this chapter, we review the underlying biology and epidemiology of the three causative intestinal nematode species that are mostly considered under the STH umbrella term...
2016: Advances in Parasitology
https://www.readbyqxmd.com/read/27706162/controlling-neglected-tropical-diseases-ntds-in-haiti-implementation-strategies-and-evidence-of-their-success
#11
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
https://www.readbyqxmd.com/read/27694735/intestinal-parasitic-infections-and-associated-epidemiological-drivers-in-two-rural-communities-of-the-bolivian-chaco
#12
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
https://www.readbyqxmd.com/read/27694082/prevalence-of-schistosomiasis-and-soil-transmitted-helminth-infections-among-schoolchildren-in-burkina-faso
#13
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
https://www.readbyqxmd.com/read/27666946/health-informatics-model-for-helminthiasis-in-thailand
#14
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
https://www.readbyqxmd.com/read/27660114/the-impact-of-an-8-year-mass-drug-administration-programme-on-prevalence-intensity-and-co-infections-of-soil-transmitted-helminthiases-in-burundi
#15
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
https://www.readbyqxmd.com/read/27658599/prevalence-of-soil-transmitted-helminths-and-molecular-clarification-of-hookworm-species-in-ethnic-ede-primary-schoolchildren-in-dak-lak-province-southern-vietnam
#16
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
https://www.readbyqxmd.com/read/27643795/schistosomiasis-and-soil-transmitted-helminths-distribution-in-benin-a-baseline-prevalence-survey-in-30-districts
#17
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
https://www.readbyqxmd.com/read/27642474/factors-influencing-community-participation-in-control-and-related-operational-research-for-urogenital-schistosomiasis-and-soil-transmitted-helminths-in-rural-villages-of-kwale-county-coastal-kenya
#18
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
https://www.readbyqxmd.com/read/27633035/impact-of-combined-intermittent-preventive-treatment-of-malaria-and-helminths-on-anaemia-sustained-attention-and-recall-in-northern-ghanaian-schoolchildren
#19
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
https://www.readbyqxmd.com/read/27616734/water-sanitation-and-hygiene-related-risk-factors-for-soil-transmitted-helminth-and-giardia-duodenalis-infections-in-rural-communities-in-timor-leste
#20
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
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