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Soil-transmitted helminth

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https://www.readbyqxmd.com/read/28632749/using-a-health-rating-system-to-evaluate-the-usefulness-of-caenorhabditis-elegans-as-a-model-for-anthelmintic-study
#1
Kathryn J Weaver, Cassandra J May, Brian L Ellis
Soil-transmitted helminths (STHs) are intestinal parasitic nematodes that infect humans, and are transmitted through contaminated soil. These nematodes include the large roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura), and hookworm (Ancylostoma ceylanicum, Ancylostoma duodenale, and Necator americanus). Nearly 1.5 billion people (~24% of the population) worldwide are infected with at least one species of these parasites, burdening the poor, in particular, children and pregnant women. To combat these diseases, the WHO only recognizes four anthelmintic drugs, including the preferred drug, albendazole, for mass drug administration (MDA)...
2017: PloS One
https://www.readbyqxmd.com/read/28615011/lessons-from-implementing-mass-drug-administration-for-soil-transmitted-helminths-among-pre-school-aged-children-during-school-based-deworming-program-at-the-kenyan-coast
#2
Rosemary M Musuva, Elizabeth Matey, Janet Masaku, Gladys Odhiambo, Faith Mwende, Isaac Thuita, Jimmy Kihara, Doris Njomo
BACKGROUND: The 2012 London declaration which committed to "sustaining, expanding and extending drug access programmes to ensure the necessary supply of drugs and other interventions to help control soil-transmitted helminths (STH) by 2020" has seen many countries in Africa roll out mass drug administration (MDA) especially among school age children. In Kenya, however, during the National school-based deworming exercise, pre-school aged children (PSAC) have to access treatment at primary schools as the pre-school teachers are not trained to carry out deworming...
June 14, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28614462/-cross-sectional-study-of-intestinal-parasitosis-in-child-populations-in-argentina
#3
Graciela Teresa Navone, María Lorena Zonta, Paola Cociancic, Mariela Garraza, María Inés Gamboa, Luis Alberto Giambelluca, Silvia Dahinten, Evelia Edith Oyhenart
Objective: Determine the distribution of intestinal parasitosis in children in nine provinces representative of Argentina's mosaic of contrasting environments. Methods: Descriptive, observational, cross-sectional study of preschool children (5 years old or under) and school-age children (6-14 years) in the provinces of Buenos Aires (sample taken between 2005 and 2013), Chubut (2010-2013), Corrientes (2012), Entre Ríos (2010-2012), Formosa (2014), La Pampa (2006), Mendoza (2008-2011), Misiones (2005-2008 and 2013), and Salta (2012-2013)...
June 8, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28606164/the-importance-of-patient-compliance-in-repeated-rounds-of-mass-drug-administration-mda-for-the-elimination-of-intestinal-helminth-transmission
#4
Sam H Farrell, James E Truscott, Roy M Anderson
BACKGROUND: Systematic non-compliance to chemotherapeutic treatment among a portion of the eligible population is thought to be a major obstacle to the elimination of helminth infections by mass drug administration (MDA). MDA for helminths is repeated at defined intervals such as yearly or every 2 years, as a consequence of the inability of the human host to develop fully protective immunity to reinfection. As such, how an individual complies to these repeated rounds of MDA can have a significant impact on parasite transmission...
June 12, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28602619/the-impact-of-sanitation-on-infectious-disease-and-nutritional-status-a-systematic-review-and-meta-analysis
#5
REVIEW
Matthew C Freeman, Joshua V Garn, Gloria D Sclar, Sophie Boisson, Kate Medlicott, Kelly T Alexander, Gauthami Penakalapati, Darcy Anderson, Amrita G Mahtani, Jack E T Grimes, Eva A Rehfuess, Thomas F Clasen
BACKGROUND: Sanitation aims to sequester human feces and prevent exposure to fecal pathogens. More than 2.4 billion people worldwide lack access to improved sanitation facilities and almost one billion practice open defecation. We undertook systematic reviews and meta-analyses to compile the most recent evidence on the impact of sanitation on diarrhea, soil-transmitted helminth (STH) infections, trachoma, schistosomiasis, and nutritional status assessed using anthropometry. METHODS AND FINDINGS: We updated previously published reviews by following their search strategy and eligibility criteria...
May 31, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28599671/is-there-a-difference-in-prevalence-of-helminths-between-households-using-ecological-sanitation-and-those-using-traditional-pit-latrines-a-latrine-based-cross-sectional-comparative-study-in-malawi
#6
Save Kumwenda, Chisomo Msefula, Wilfred Kadewa, Yohane Diness, Charles Kato, Tracy Morse, Bagrey Ngwira
BACKGROUND: Studies have shown that households using sludge from human excreta for agriculture are at an increased risk of soil transmitted helminths. However, while use of ecological sanitation (EcoSan) latrines is increasing in most African countries including Malawi, few studies have been done to check whether use of such sludge could potentially increase the prevalence of helminthic infections among household members as a results of exposure to faecal sludge/compared to use of traditional latrines...
June 9, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28599633/prevalence-of-intestinal-parasitic-infection-and-associated-risk-factors-among-village-health-volunteers-in-rural-communities-of-southern-thailand
#7
Chuchard Punsawad, Nonthapan Phasuk, Suchirat Bunratsami, Kanjana Thongtup, Niramon Siripakonuaong, Somchok Nongnaul
BACKGROUND: Intestinal parasitic infections remain prevalent and constitute a public health problem in certain rural areas of Thailand. Village health volunteers (VHVs), who are members of a Thai healthcare alliance, function as key providers of health prevention measures, disease control, and health education and share national health promotion campaigns with community members. This study is aimed at evaluating the prevalence, intensity, and risk factors for intestinal parasitic infection in VHVs in order to design community awareness and health education campaigns for the target population...
June 9, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28594828/an-individual-level-meta-analysis-assessing-the-impact-of-community-level-sanitation-access-on-child-stunting-anemia-and-diarrhea-evidence-from-dhs-and-mics-surveys
#8
David A Larsen, Thomas Grisham, Erik Slawsky, Lutchmie Narine
BACKGROUND: A lack of access to sanitation is an important risk factor child health, facilitating fecal-oral transmission of pathogens including soil-transmitted helminthes and various causes of diarrheal disease. We conducted a meta-analysis of cross-sectional surveys to determine the impact that community-level sanitation access has on child health for children with and without household sanitation access. METHODOLOGY/PRINCIPAL FINDINGS: Using 301 two-stage demographic health surveys and multiple indicator cluster surveys conducted between 1990 and 2015 we calculated the sanitation access in the community as the proportion of households in the sampled cluster that had household access to any type of sanitation facility...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28560181/a-modified-assay-for-the-enumeration-of-ascaris-eggs-in-fresh-raw-sewage
#9
Esmaeil Shahsavari, Jonathan Schmidt, Arturo Aburto-Medina, Basma Khallaf, Vivek Balakrishnan, Nicholas D Crosbie, Aravind Surapaneni, Andrew S Ball
Soil-transmitted helminths (STHs) pose a significant public health problem, infecting approximately 2 billion people globally. Despite relatively low prevalence in developed countries, the removal of STHs from wastewater remains crucial to allow the safe use of biosolids or recycled water for agriculture. Wastewater helminth egg count data can contribute to an assessment of the need for, or success of, a parasite management program. Although the World Health Organisation (WHO) has recommended a standard method for counting helminth eggs in raw sewage based on the method of Bailenger (Ayres et al...
2017: MethodsX
https://www.readbyqxmd.com/read/28535806/the-past-matters-estimating-intrinsic-hookworm-transmission-intensity-in-areas-with-past-mass-drug-administration-to-control-lymphatic-filariasis
#10
Marleen Werkman, James E Truscott, Jaspreet Toor, James E Wright, Roy M Anderson
BACKGROUND: Current WHO guidelines for soil-transmitted helminth (STH) control focus on mass drug administration (MDA) targeting preschool-aged (pre-SAC) and school-aged children (SAC), with the goal of eliminating STH as a public health problem amongst children. Recently, attention and funding has turned towards the question whether MDA alone can result in the interruption of transmission for STH. The lymphatic filariasis (LF) elimination programme, have been successful in reaching whole communities...
May 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28507618/correlation-between-soil-transmitted-helminth-infection-and-eosinophil-levels-among-primary-school-children-in-medan
#11
Dewi Masyithah Darlan, Zaimah Z Tala, Cellya Amanta, Syah Mirsya Warli, Nurfida K Arrasyid
BACKGROUND: Soil Transmitted Helminth infection is one of most prevalent health problems worldwide, especially in environments with poor sanitation. Based on World Health Organisation (WHO) data, more than 2 billion people, or 24% of the world's population, are infected with intestinal parasite. The highest prevalence is located in areas of poor sanitation and unsafe water supplies. In Indonesia, the prevalence of parasite infections is 15% of the entire population. AIM: The purpose of this study was to determine the relationship between Soil Transmitted Helminth infection on levels of eosinophils among primary school children...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28507613/correlation-between-soil-transmitted-helminths-infection-and-serum-iron-level-among-primary-school-children-in-medan
#12
Nurfida K Arrasyid, Monica Nadya Sinambela, Zaimah Z Tala, Dewi Masyithah Darlan, Syah Mirsya Warli
BACKGROUND: The latest estimates indicate that more than 2 billion people worldwide are infected by Soil-Transmitted Helminths (STH). The burden of STH infection is mainly attributed to the chronic effect on health and quality of life of those infected. It is also contributed to micronutrient deficiencies such as iron-deficiency anaemia. The prevalence of worm infection in Public Primary School students in Medan was quite high (40.3%), and 33.3% was anaemic in the latest study. AIM: To determine the correlation between STH infection with serum iron (SI) level on primary school children, as well as to determine the prevalence of SI level and worm infection, and the type of worm that infects the most of them...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28490972/intensifying-responsiveness-towards-neglected-intestinal-helminth-infections-in-a-resource-constrained-setting
#13
Khin Thet Wai, Kay Thwe Han, Tin Oo
Neglected intestinal helminth infections afflict the marginalized communities in Asia. Since 2004, growing body of evidence in Myanmar indicated high prevalence of soil-transmitted helminths (STH) infections (30-40%) among school children. Co-existence of STH (23%) with food-borne trematodes was noted among 383 pregnant women in a selected township in 2012-2014 followed by molecular verification of very low prevalence of schistosome infection (<5%) in the same study site in 2016. The success of transmission elimination plans may depend upon sensitive diagnostic tools to detect persistent infections and polyparasitism...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/28489889/an-environmental-assessment-and-risk-map-of-ascaris-lumbricoides-and-necator-americanus-distributions-in-manufahi-district-timor-leste
#14
Rebecca Wardell, Archie C A Clements, Aparna Lal, David Summers, Stacey Llewellyn, Suzy J Campbell, James McCarthy, Darren J Gray, Susana V Nery
BACKGROUND: In Timor-Leste there have been intermittent and ineffective soil-transmitted helminth (STH) deworming programs since 2004. In a resource-constrained setting, having information on the geographic distribution of STH can aid in prioritising high risk communities for intervention. This study aimed to quantify the environmental risk factors for STH infection and to produce a risk map of STH in Manufahi district, Timor-Leste. METHODOLOGY/PRINCIPAL FINDINGS: Georeferenced cross-sectional data and stool samples were obtained from 2,194 participants in 606 households in 24 villages in the Manufahi District as part of cross sectional surveys done in the context of the "WASH for Worms" randomised controlled trial...
May 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28481890/associations-between-selective-attention-and-soil-transmitted-helminth-infections-socioeconomic-status-and-physical-fitness-in-disadvantaged-children-in-port-elizabeth-south-africa-an-observational-study
#15
Stefanie Gall, Ivan Müller, Cheryl Walter, Harald Seelig, Liana Steenkamp, Uwe Pühse, Rosa du Randt, Danielle Smith, Larissa Adams, Siphesihle Nqweniso, Peiling Yap, Sebastian Ludyga, Peter Steinmann, Jürg Utzinger, Markus Gerber
BACKGROUND: Socioeconomically deprived children are at increased risk of ill-health associated with sedentary behavior, malnutrition, and helminth infection. The resulting reduced physical fitness, growth retardation, and impaired cognitive abilities may impede children's capacity to pay attention. The present study examines how socioeconomic status (SES), parasitic worm infections, stunting, food insecurity, and physical fitness are associated with selective attention and academic achievement in school-aged children...
May 8, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28475238/antecedent-nippostrongylus-infection-alters-the-lung-immune-response-to-plasmodium-berghei
#16
J M Craig, A L Scott
In endemic regions, it is not uncommon for patients to be co-infected with soil-transmitted helminthes and malaria. Although both malaria and many helminth species use the lungs as a site of development, little attention has been paid to the impact that pulmonary immunity induced by one parasite has on the lung response to the other. To model the consequences of a prior hookworm exposure on the development of immunity to malaria in the lungs, mice were infected with Nippostrongylus brasiliensis and two weeks later challenged with Plasmodium berghei...
May 5, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28472383/effect-of-anthelmintic-treatment-on-insulin-resistance-a-cluster-randomized-placebo-controlled-trial-in-indonesia
#17
Dicky L Tahapary, Karin de Ruiter, Ivonne Martin, Eric A T Brienen, Lisette van Lieshout, Christa M Cobbaert, Pradana Soewondo, Yenny Djuardi, Aprilianto E Wiria, Jeanine J Houwing-Duistermaat, Erliyani Sartono, Johannes Wa Smit, Maria Yazdanbakhsh, Taniawati Supali
Background: Emerging evidence suggests that helminth infections are associated with lower insulin resistance (IR). Current deworming programmes might remove this helminth-associated protective effect. Therefore, we evaluated the anthelmintic treatment effect on changes in IR. Methods: We conducted a double-blind household-cluster-randomized placebo-controlled clinical trial on Flores island, Indonesia, an area endemic for soil-transmitted helminths (STH). All subjects received four rounds of three-monthly albendazole or matching placebo for three consecutive days...
May 3, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28449427/trichuris-trichiura-infection-in-north-korean-defector-resulted-in-chronic-abdominal-pain-and-growth-retardation
#18
Jong Bin Kim, Kwang Il Seo, Won Moon
Trichuris trichiura infection is a common helminth infection, which is transmitted via soil, with worldwide distribution, especially in rural areas of developing countries. Occasionally, sporadic cases occur in non-endemic, developed areas due to the widespread of immigration. We experienced a case of Trichuris dysentery syndrome in a young North Korean defector, who had been suffering from chronic abdominal pain for 10 years. He is relatively short and thin compared with his older brother. Unexpectedly, the diagnosis, made by a colonoscopy, revealed numerous, small, white, and gently moving worms at the cecum and ascending colon...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28442321/high-prevalence-of-plasmodium-falciparum-and-soil-transmitted-helminth-co-infections-in-a-periurban-community-in-kwara-state-nigeria
#19
Olarewaju A Babamale, Uade S Ugbomoiko, Jorg Heukelbach
Prevalence of malaria and soil-transmitted helminth infections, and the burden of disease are enormous in sub-Saharan Africa. Co-infections aggravate the clinical outcome, but are common due to an overlap of endemic areas. A cross-sectional survey was conducted to assess prevalence, intensity of infection and association between malaria and soil-transmitted helminth infections in a typical periurban community in Kwara State. Fresh blood and faecal samples were examined using thick blood film and Kato-Katz smear techniques...
April 22, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28426784/building-on-the-success-of-soil-transmitted-helminth-control-the-future-of-deworming
#20
Peter Mark Jourdan, Antonio Montresor, Judd L Walson
No abstract text is available yet for this article.
April 2017: PLoS Neglected Tropical Diseases
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