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https://www.readbyqxmd.com/read/28633651/epidemiology-of-intestinal-helminthiasis-among-school-children-with-emphasis-on-schistosoma-mansoni-infection-in-wolaita-zone-southern-ethiopia
#1
Bereket Alemayehu, Zewdneh Tomass, Fiseha Wadilo, Dawit Leja, Song Liang, Berhanu Erko
BACKGROUND: Intestinal helminth infections are major parasitic diseases causing public health problems in Ethiopia. Although the epidemiology of these infections are well documented in Ethiopia, new transmission foci for schistosomiasis are being reported in different parts of the country. The objective of this study was to assess the prevalence of Schistosoma mansoni and other intestinal helminth infections among school children and determine the endemicity of schistosomiasis in Wolaita Zone, southern Ethiopia...
June 20, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28408098/population-genetics-of-the-schistosoma-snail-host-bulinus-truncatus-in-egypt
#2
Rima Zein-Eddine, Félicité F Djuikwo-Teukeng, Yasser Dar, Gilles Dreyfuss, Frederik Van den Broeck
The tropical freshwater snail Bulinus truncatus serves as an important intermediate host of several human and cattle Schistosoma species in many African regions. Despite some ecological and malacological studies, there is no information on the genetic diversity of B. truncatus in Egypt. Here, we sampled 70-100 snails in ten localities in Upper Egypt and the Nile Delta. Per locality, we sequenced 10 snails at a partial fragment of the cytochrome c oxidase subunit 1 gene (cox1) and we genotyped 25-30 snails at six microsatellite markers...
April 11, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28238285/urogenital-schistosomiasis-and-soil-transmitted-helminthiasis-sth-in-cameroon-an-epidemiological-update-at-barombi-mbo-and-barombi-kotto-crater-lakes-assessing-prospects-for-intensified-control-interventions
#3
Suzy J Campbell, J Russell Stothard, Faye O'Halloran, Deborah Sankey, Timothy Durant, Dieudonné Eloundou Ombede, Gwladys Djomkam Chuinteu, Bonnie L Webster, Lucas Cunningham, E James LaCourse, Louis-Albert Tchuem-Tchuenté
BACKGROUND: The crater lakes of Barombi Mbo and Barombi Kotto are well-known transmission foci of schistosomiasis and soil-transmitted helminthiasis having had several important control initiatives previously. To collect contemporary epidemiological information, a cross-sectional survey was undertaken inclusive of: signs and symptoms of disease, individual treatment histories, local water, sanitation and hygiene (WASH)-related factors and malacological surveillance, with molecular characterisation of specimens...
February 27, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28162096/intestinal-schistosomiasis-in-uganda-at-high-altitude-1400%C3%A2-m-malacological-and-epidemiological-surveys-on-mount-elgon-and-in-fort-portal-crater-lakes-reveal-extra-preventive-chemotherapy-needs
#4
Michelle C Stanton, Moses Adriko, Moses Arinaitwe, Alison Howell, Juliet Davies, Gillian Allison, E James LaCourse, Edridah Muheki, Narcis B Kabatereine, J Russell Stothard
BACKGROUND: Intestinal schistosomiasis is of public health importance in Uganda but communities living above 1400 m are not targeted for control as natural transmission is thought unlikely. To assess altitudinal boundaries and at-risk populations, conjoint malacological and epidemiological surveys were undertaken on Mount Elgon (1139 m-3937 m), in Fort Portal crater lakes and in the Rwenzori Mountains (1123 m-4050 m). METHODS: Seventy freshwater habitats [Mount Elgon (37), Fort Portal crater lakes (23), Rwenzori Mountains (8) and Lake Albert (2)] were inspected for Biomphalaria species...
February 6, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28146171/urban-transmission-of-schistosomiasis-new-epidemiological-situation-in-the-forest-area-of-pernambuco
#5
Elainne Christine de Souza Gomes, Millena Carla da Silva Mesquita, Vitorina Nerivânia Covello Rehn, Wheverton Ricardo Correia do Nascimento, Rodrigo Loyo, Constança Simões Barbosa
Introduction: Schistosomiasis is considered an endemic disease in Vitória de Santo Antão, Pernambuco, a district which has presented both high incidence and prevalence of it for decades. Poor environmental conditions lead to contamination of water sources in rural areas, which are used by the population during daily activities, resulting in typical transmission. Recently, there has been evidence of vector snails in urban areas, which could set a new model for schistosomiasis transmission in this district...
October 2016: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/27326385/freshwater-gastropods-diversity-hotspots-three-new-species-from-the-uruguay-river-south-america
#6
Diego E Gutiérrez Gregoric, Micaela de Lucía
BACKGROUND: The Atlantic Forest is globally one of the priority ecoregions for biodiversity conservation. In Argentina, it is represented by the Paranense Forest, which covers a vast area of Misiones Province between the Paraná and Uruguay rivers. The Uruguay River is a global hotspot of freshwater gastropod diversity, here mainly represented by Tateidae (genus Potamolithus) and to a lesser extent Chilinidae. The family Chilinidae (Gastropoda, Hygrophila) includes 21 species currently recorded in Argentina, and three species in the Uruguay River...
2016: PeerJ
https://www.readbyqxmd.com/read/27230422/natural-and-human-induced-factors-influencing-the-abundance-of-schistosoma-host-snails-in-zambia
#7
Concillia Monde, Stephen Syampungani, Paul J van den Brink
Schistosomiasis remains a global public health problem affecting about 240 million people. In Zambia, 2 million are infected while 3 million live with the risk of getting infected. Research and interventions relating to schistosomiasis are mainly linked to disease epidemiology. Malacological and ecological aspects of the disease are superficially understood. Developing effective control measures requires an understanding of interacting environmental and socioeconomic factors of host snails vis-a-vis schistosomiasis...
June 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27197551/outbreak-of-urogenital-schistosomiasis-in-corsica-france-an-epidemiological-case-study
#8
Jérôme Boissier, Sébastien Grech-Angelini, Bonnie L Webster, Jean-François Allienne, Tine Huyse, Santiago Mas-Coma, Eve Toulza, Hélène Barré-Cardi, David Rollinson, Julien Kincaid-Smith, Ana Oleaga, Richard Galinier, Joséphine Foata, Anne Rognon, Antoine Berry, Gabriel Mouahid, Rémy Henneron, Hélène Moné, Harold Noel, Guillaume Mitta
BACKGROUND: Schistosomiasis is a snail-borne parasitic disease endemic in several tropical and subtropical countries. However, in the summer of 2013, an unexpected outbreak of urogenital schistosomiasis occurred in Corsica, with more than 120 local people or tourists infected. We used a multidisciplinary approach to investigate the epidemiology of urogenital schistosomiasis in Corsica, aiming to elucidate the origin of the outbreak. METHODS: We did parasitological and malacological surveys at nine potential sites of infection...
August 2016: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/27015646/impact-of-annual-praziquantel-treatment-on-urogenital-schistosomiasis-in-a-seasonal-transmission-focus-in-central-senegal
#9
Bruno Senghor, Omar Talla Diaw, Souleymane Doucoure, Mouhamadane Seye, Adiouma Diallo, Idrissa Talla, Cheikh T Bâ, Cheikh Sokhna
In Sub-Saharan Africa, urogenital schistosomiasis remains a significant public health problem, causing 150.000 deaths/year with approximately 112 million cases diagnosed. The Niakhar district is a disease hotspot in central Senegal where transmission occurs seasonally with high prevalences. The aim of this study was to determine the effect of annual treatment over 3 years on the seasonal transmission dynamics of S. haematobium in 9 villages in the Niakhar district. Adults and children aged between 5 and 60 years were surveyed from 2011 to 2014...
March 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/26863858/malacological-investigation-of-the-fully-operational-nam-theun-2-hydroelectric-dam-project-in-khammouane-province-central-lao-pdr
#10
Pusadee Sri-aroon, Phiraphol Chusongsang, Yupa Chusongsang, Yanin Limpanont, Pornpimol Surinthwong, Khamsing Vongphayloth, Paul T Brey
We conducted a malacological investigation in four districts of the Nam Theun 2 (NT2) hydroelectric dam project area, Khammouane Province, central Lao PDR (Nakai, Gnommalath, Mahaxai and Xe Bang Fai), after the first and second years of full operation in March 2010 and November 2011 to determine health risks for humans. A total 10,863 snail specimens (10 families/23 species) from 57 sampling stations and 12,902 snail specimens (eight families/21 species) from 66 sampling stations were collected in 2010 and 2011, respectively...
September 2015: Southeast Asian Journal of Tropical Medicine and Public Health
https://www.readbyqxmd.com/read/26775291/assessment-of-the-fascimol-elisa-in-the-detection-of-the-trematode-fasciola-hepatica-in-field-collected-galba-cubensis-a-novel-tool-for-the-malacological-survey-of-fasciolosis-transmission
#11
Annia Alba, Antonio A Vázquez, Jorge Sánchez, Jorge Fraga, Hilda Hernández, Elizabeth Martínez, Ricardo Marcet, Mabel Figueredo, Jorge Sarracent
BACKGROUND: Fasciolosis is one of the food-borne neglected trematodioses that has reemerged as a human disease while its effects on domestic animal health remains of significant economic consideration. Being snail-borne disease, the accurate and time-saving epidemiological surveillance of the transmission foci where infected lymnaeid snails occur could be essential to effectively focus or redirect control strategies. For this purpose, the first monoclonal antibody-based immunoenzymatic assay to detect Fasciola hepatica-infected snails (FasciMol-ELISA) was recently developed and showed a high sensitivity and specificity when tested in an experimental F...
January 16, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/26520794/prevalence-of-intestinal-helminth-infection-among-school-children-in-maksegnit-and-enfranz-towns-northwestern-ethiopia-with-emphasis-on-schistosoma-mansoni-infection
#12
Fikru Gashaw, Mulugeta Aemero, Mengistu Legesse, Beyene Petros, Tilahun Teklehaimanot, Girmay Medhin, Nega Berhe, Yalemtsehay Mekonnen, Berhanu Erko
BACKGROUND: Schistosomiasis is endemic in Ethiopia and previously unknown transmission foci have been reported from time to time in different parts of the country. Further surveys are required in areas where endemicity of the disease is not known to cover them with control program if transmission is taking place. This study, therefore, aims to assess the magnitude of schistosomiasis mansoni and soil-transmitted helminthiasis in Maksegnit and Enfranz Towns, northwestern Ethiopia. METHODS: Cross-sectional parasitological and malacological surveys were conducted in three schools found in Maksegnit and Enfranz Towns...
2015: Parasites & Vectors
https://www.readbyqxmd.com/read/26246374/study-of-the-snail-intermediate-hosts-of-urogenital-schistosomiasis-in-niakhar-region-of-fatick-west-central-senegal
#13
Bruno Senghor, Omar Talla Diaw, Souleymane Doucoure, Mouhamadane Seye, Idrissa Talla, Adiouma Diallo, Cheikh Tidiane Bâ, Cheikh Sokhna
BACKGROUND: Schistosoma haematobium is the most widespread schistosome species in Senegal and occurs in several regions of the country especially in the Sudan-Sahelian zone. The aims of the study were i) to determine the freshwater species ii) to ascertain the role of the identified snail species in the transmission of S. haematobium and iii) to study the impact of drought on the snails. METHODS: Snails were sampled each year in 17 sites from July to November-December 2012 and 2013...
2015: Parasites & Vectors
https://www.readbyqxmd.com/read/26003596/evidence-of-increasing-risk-of-schistosomiasis-among-school-age-children-in-municipality-of-calatrava-province-of-negros-occidental-philippines
#14
V Y Belizario, J M Erfe, Jra Naig, Plc Chua
OBJECTIVE: To explore risk of school-age children being infected with schistosomiasis in selected villages in the municipality of Calatrava, province of Negros Occidental, Philippines. METHODS: As part of the monitoring and evaluation of the helminth control program in the province of Negros Occidental, parasitological monitoring, through the use microscopy of stool samples processed using Kato-Katz technique, was conducted to describe the baseline and follow-up parasitological status of school-age children in 2010 and 2012, respectively...
May 2015: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/25982569/biomphalaria-straminea-mollusca-planorbidae-as-an-intermediate-host-of-drepanocephalus-spp-trematoda-echinostomatidae-in-brazil-a-morphological-and-molecular-study
#15
Hudson A Pinto, Matt J Griffin, Sylvie M Quiniou, Cynthia Ware, Alan L Melo
Species of trematodes belonging to the genus Drepanocephalus are intestinal parasites of piscivorous birds, primarily cormorants (Phalachrocorax spp.), and are widely reported in the Americas. During a 4-year malacological study conducted on an urban lake in Brazil, 27-collar-spined echinostome cercariae were found in 1665/15,459 (10.7 %) specimens of Biomphalaria straminea collected. The cercariae were identified as Drepanocephalus spp. by sequencing the 18S (SSU) rDNA, ITS1/5.8S rDNA/ITS2 (ITS), 28S (LSU) rDNA region, cytochrome oxidase subunit 1 (CO1), and nicotinamide adenine dinucleotide dehydrogenase subunit 1 (ND1) markers...
January 2016: Parasitology Research
https://www.readbyqxmd.com/read/25973199/urban-schistosomiasis-and-associated-determinant-factors-among-school-children-in-bamako-mali-west-africa
#16
Abdoulaye Dabo, Adama Z Diarra, Vanessa Machault, Ousmane Touré, Diarra Sira Niambélé, Abdoulaye Kanté, Abdoulaye Ongoiba, Ogobara Doumbo
BACKGROUND: Schistosomiasis is classically described as a rural disease that occurs in areas with poor sanitary conditions. However, over recent decades, there has been an expansion of schistosomiasis foci towards urban areas faced with a rapid and disordered urbanization. In Bamako, Mali, the impact of environmental change on vector-borne diseases such as schistosomiasis is not well known. This study sought to identify the presence of schistosomiasis transmission hotspots in Bamako. Using this perspective, we aimed to describe the risk factors of the endemization and maintenance of schistosomiasis...
2015: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/25643852/a-new-focus-of-schistosomiasis-mansoni-in-hayk-town-northeastern-ethiopia
#17
Gashaw Amsalu, Zeleke Mekonnen, Berhanu Erko
BACKGROUND: The endemicity of human schistosomiasis has long been established in Ethiopia, and new foci have also been continuously reported.The objective of this study was to determine the transmission and magnitude of schistosomiasis in Hayk area, northeastern Ethiopia. METHODS: A cross sectional parasitological survey involving 384 school children was conducted for intestinal schistosomiasis between January and March 2010 in two primary schools in Hayk area, northeastern Ethiopia...
2014: BMC Research Notes
https://www.readbyqxmd.com/read/25545929/the-spatial-and-seasonal-distribution-of-bulinus-truncatus-bulinus-forskalii-and-biomphalaria-pfeifferi-the-intermediate-host-snails-of-schistosomiasis-in-n-djamena-chad
#18
Wendelin Moser, Helena Greter, Christian Schindler, Fiona Allan, Bongo N R Ngandolo, Daugla D Moto, Jürg Utzinger, Jakob Zinsstag
There is a paucity of epidemiological and malacological data pertaining to schistosomiasis in Chad. In view of a recently articulated elimination agenda, a deeper understanding of the spatio-temporal distribution of schistosomiasis intermediate host snails is pivotal. We conducted cross-sectional malacological surveys during the dry season (April/May 2013) and after the short rainy season (October 2013) in N'Djamena, the capital of Chad. Snails were identified at the genus and species level using morphological keys and molecular DNA barcoding approaches...
November 2014: Geospatial Health
https://www.readbyqxmd.com/read/25229292/a-malacological-survey-in-the-manso-power-plant-state-of-mato-grosso-brazil-new-records-of-freshwater-snails-including-transmitters-of-schistosomiasis-and-exotic-species
#19
Monica Ammon Fernandez, Aline Carvalho de Mattos, Elizangela Feitosa da Silva, Sonia Barbosa Dos Santos, Silvana Carvalho Thiengo
INTRODUCTION: Schistosomiasis is a parasitic disease of public health concern in Brazil, and the construction of hydroelectric dams, in addition to increasing permanent human settlement and tourism, has created conditions suitable for the establishment of mollusks that can transmit schistosomiasis. Such areas require a number of actions to prevent the establishment of schistosomiasis. This paper reports on a freshwater malacological survey carried out in the geographical area of the Manso Power Plant...
July 2014: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/25184111/evaluation-and-updating-of-the-medical-malacology-collection-fiocruz-cmm-using-molecular-taxonomy
#20
Cryslaine Aguiar-Silva, Cristiane Lafetá Furtado Mendonça, Pedro Henrique da Cunha Kellis Pinheiro, Silvia Gonçalves Mesquita, Omar Dos Santos Carvalho, Roberta Lima Caldeira
BACKGROUND: The Medical Malacology Collection (Coleção de Malacologia Médica, Fiocruz-CMM) is a depository of medically relevant mollusks, especially from the genus Biomphalaria, which includes the hosts of Schistosoma mansoni. Taxonomic studies of these snails have traditionally focused on the morphology of the reproductive system. However, determination of some species is complicated by the similarity shown by these characters. Molecular techniques have been used to try to overcome this problem...
2014: SpringerPlus
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