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Id: biblio-1290559
Autor: Cardillo, Natalia; González Prous, Cintia; Krivokapich, Silvio; Pittaro, Mariana; Ercole, Mariano; Perez, Matías; Pasqualetti, Mariana; Fariña, Fernando; Rosa, Adriana; Gatti, Graciana; Ribicich, Mabel.
Título: Primer reporte de Toxocara cati en el caracol doméstico Rumina decollata / First report of Toxocara cati in the domestic land snail Rumina decollata
Fonte: Rev. argent. microbiol;48(3):206-209, set. 2016. ilus.
Idioma: en.
Resumo: Se estudió el rol prospectivo de Rumina decollata como potencial hospedador paraténico de Toxocara cati para los gatos domésticos. Se recolectaron caracoles R. decollata y heces de gatos de un hospital de la Ciudad Autónoma de Buenos Aires. Se procesaron las heces y los caracoles fueron digeridos para identificar estadios de T. cati por análisis morfológico y molecular. El 23,5% (4/17) de las muestras de heces resultaron positivas a huevos larvados de T. cati. El 20% (5/25) de los pooles de caracoles fue positivo a larvas de tercer estadío (L3) de Toxocara spp. por PCR. El promedio de larvas totales recuperadas por gramo de caracol en todos los pooles positivos fue de 5.1, con un máximo de 33 L3/pool. Se trata del primer reporte de R. decollata como hospedador paraténico de T. cati, puesto que ha sido demostrada la infección en caracoles y gatos en un ambiente común

The prospective role of the land snail Rumina decollata as a potential paratenic host of Toxocara cati for domestic cats was studied. R. decollata specimens and cats' feces were collected from the open spaces of a Buenos Aires city hospital. Cats' feces were analyzed and snails were digested to identify T. cati stages, by morphological and molecular analyses. T. cati larval eggs were recovered from 23.5% (4/17) of the sampled feces. Twenty percent of snail pools (5/25) were confirmed to be positive for Toxocara spp. third larval stage (L3) by PCR. The mean value of total larvae recovered per gram of snail in all positive pools was 5.1, with a maximum 33 L3/pool. This is the first report of T. cati infective larvae in R. decollata domestic snail as a paratenic host, since the relationship between infection in snails and in cats' feces could be demonstrated in a common environment
Descritores: Caramujos/parasitologia
Caramujos/patogenicidade
Toxocara/isolamento & purificação
Reação em Cadeia da Polimerase/métodos
-Fezes/parasitologia
Adaptação ao Hospedeiro/fisiologia
Limites: Animais
Gatos
Tipo de Publ: Ensaio Clínico Veterinário
Responsável: AR635.1 - FCVyS - Servicio de Información y Documentación


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Id: biblio-1279659
Autor: Lepe-López , Manuel; Villatoro-Paz, Federico; Valdez-Sandoval, Carlos; Rios MA, Ligia; Díaz-Rodríguez MV, Mercedes; Guerra-Centeno, Dennis.
Título: Reporte de Pseudosuccinea columella infectados con Fasciola hepática en Sierra de los Cuchumatanes, Guatemala / Report ofPseudosuccinea columella,infected withFasciola hepaticaat Sierra de los Cuchumatanes, Guatemala
Fonte: Rev. MVZ Córdoba;25(1):94-97, ene.-abr. 2020. graf.
Idioma: es.
Resumo: RESUMEN Objetivo. Identificar la infección natural de caracoles de agua dulce con Fasciola hepatica en una localidad del altiplano de Guatemala. Materiales y métodos. Se colectaron caracoles de agua dulce en una aldea endémica de fascioliasis, en la localidad de Paquix, en el departamento de Huehuetenango, ubicado a ~3.300 msnm. La identificación de la especie de caracol se basó en las características morfológicas observadas por estereoscopio usando una clave de identificación. La búsqueda de fases del trematodo se realizó mediante la inspección visual externa con fuente de luz y la disección e inspección visual dentro del molusco bajo estereoscopio y microscopio. Resultados. 260 caracoles fueron encontrados e identificados como Pseudosuccinea columella. Se examinaron los especímenes colectados y se encontraron dos caracoles infectados de forma natural con fases larvarias de F. hepatica. Conclusiones . Este es el primer reporte de este hospedero intermediario portando formas de F. hepatica en Guatemala. Es necesario aumentar los reportes de este parásito y de sus interacciones ecológicas en otras áreas no estudiadas de Guatemala y Centro América, debido al riesgo latente de infección para poblaciones de animales herbívoros y humanos.

ABSTRACT Objective. Identify the natural infection of freshwater snails as an intermediate host of Fasciola hepatica in Guatemala. Materials and methods. Freshwater snails were collected in a high-altitude village (3.000 mamsl) from Huehuetenango department, where fasciolasis is endemic. The identification of the snail species was based on the morphological characteristics observed under the stereoscope using an identification key. The trematode phases were searched externally by visual inspection using a light source, and internally by dissection and visual inspection of the tissues under a stereoscope and microscope. Results. 260 snails were found and identified as Pseudosuccinea columella. Two were found naturally infected with larval phases of F. hepatica. Conclusions. This is the first report of P. columella carrying phases of F. hepatica in the highlands of Guatemala. It is necessary to increase the research of the ecology of this parasite in other understudied areas in Guatemala and Central America, due to the latent risk of infection for populations of herbivorous animals and humans.
Descritores: Infecções por Trematódeos
-Caramujos
Trematódeos
Zoonoses
Limites: Animais
Tipo de Publ: Artigo Clássico
Responsável: CO140 - Facultad de Medicina Veterinária y Zootecnia


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Id: lil-676126
Autor: Santibañez Aguascalientes, Norma Angélica; Ortíz Ordóñez, Esperanza; Falcón Alcántara, Andrés; Heimer de la Cotera, Edgar P.
Título: Estudio histológico del tubo digestivo y aparato venenoso de Gemmula periscelida (Gastropoda: Turridae) / Histologic study of digestive tract and venom apparatus of Gemmula periscelida (Gastropoda: Turridae)
Fonte: Int. j. morphol;31(1):7-14, mar. 2013. ilus.
Idioma: es.
Resumo: En el presente trabajo se describe anatómica e histológicamente el tubo digestivo y aparato venenoso de Gemmula periscelida (Gastropoda: Turridae) en ejemplares colectados al Noroeste de la Plataforma Continental Yucateca. Se determinó que el tipo de epitelio que reviste a cada una de las zonas del tubo digestivo (probóscide, esófago anterior, medio y posterior, estómago, glándula digestiva e intestino) y al aparato venenoso, es diferente a lo reportado para otros túrridos; por lo que se infiere el posible mecanismo de alimentación para esta especie.

In this paper we realized anatomical and histologically description of the digestive tract and venom apparatus of Gemmula periscelida (Gastropoda: Turridae) specimens collected northwest of the Yucatan Shelf. Results of analysis show that there are differences in the type of epithelium coating each of the areas of the digestive tract (proboscis, anterior, middle and posterior esophagus, stomach, digestive gland and intestine) and of a venom apparatus with respect to that reported for other turrid snails. This suggests the possible feeding mechanism for this species.
Descritores: Caramujos/anatomia & histologia
Trato Gastrointestinal/anatomia & histologia
-Peçonhas
Venenos de Moluscos
Limites: Animais
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Cuba
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Id: biblio-1093416
Autor: Rodríguez Pérez, José Alejandro; Meijides Mejías, Christian; Ramos Robledo, Alejandro; Pérez del Vallín, Vanessa; Mirabal Viel, Alejandro; Gómez Pérez, David; Castillo González, William; Dorta Contreras, Alberto Juan; Martini Robles, Luiggi.
Título: Strongylides in Achatina(Lissachatina)fulica (Mollusca, Achatinidae) in Havana, Cuba / Strongylides in Achatina(Lissachatina)fulica (Mollusca, Achatinidae) in Havana, Cuba
Fonte: Rev. cuba. invest. bioméd;38(4):e312, oct.-dic. 2019. graf.
Idioma: en.
Resumo: ABSTRACT Achatina (Lissachatina) fulica was introduced in Cuba in 2014 for african religious purposes and nowadays, mainly by human activity, it is widespread all over the country and, where besides a general nuisance for people it is a pest and also a public health concern, since it is one of the natural intermediate host of Angiostrongylus cantonensis, ethiological agent of the meningoencephalitis. As in Havana is experiencing the explosive phase of the invasion, LABCEL has been receiving samples of these molluscs for identification and search for Angiostrongylus cantonensis larvae. While examining samples of A. fulica different larvae were obtained, as strongylides found in the interior of the pallial cavity of A. fulica.This is the first report in San Miguel del Padron and Regla municipalities of the development of larvae in A. Fulica evidencing the health importance of this mollusc in the potential transmission of eosinophilic meningoencephalitis. Since the spread of A. fulica is pointed out in the literature as one of the main causative spread of the meningoencephalitis caused by A. cantonensis the authors emphasize the need of sanitary vigilance of snails and rats from vulnerable areas for A. cantonensis introduction as the port side areas like these municipalities.

RESUMEN Achatina (Lissachatina) fulica se introdujo en Cuba en 2014 con fines religiosos africanos y hoy en día, principalmente por actividad humana, está muy extendida en todo el país y, además de una molestia general para las personas, es una plaga y también un problema de salud pública, ya que es uno de los huéspedes intermedios naturales de Angiostrongylus cantonensis, agente etiológico de la meningoencefalitis. Como en La Habana está experimentando la fase explosiva de la invasión, LABCEL ha estado recibiendo muestras de estos moluscos para su identificación y búsqueda de larvas de Angiostrongylus cantonensis. Mientras se examinaban muestras de A. fulica, se obtuvieron diferentes larvas, como strongylides encontrados en el interior de la cavidad paliar de A. fulica. Este es el primer informe en los municipios de San Miguel del Padrón y Regla sobre el desarrollo de larvas en A. Fulica evidenciando La importancia para la salud de este molusco en la transmisión potencial de la meningoencefalitis eosinofílica. Dado que la propagación de A. fulica se señala en la literatura como una de las principales causas de la meningoencefalitis causada por A. cantonensis, los autores enfatizan la necesidad de vigilancia sanitaria de caracoles y ratas de áreas vulnerables para la introducción de A. cantonensis como zonas de babor como estos municipios.
Descritores:
Caramujos
Vigilância Sanitária
Relatório de Pesquisa
Atividades Humanas
-Angiostrongylus cantonensis
Moluscos
Limites: Humanos
Responsável: CU1.1 - Biblioteca Médica Nacional


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Id: lil-676169
Autor: Ajadi, Adetola R; Gazal, Oladele, S; Otesile, Ebenezer, B; Kasali, Olajide, B.
Título: Evaluation of glucosamine and snail mucin on the progression of experimental knee osteoarthritis in dogs / Evaluación de la glucosamina y mucina de caracol en la progresión de la osteoartritis experimental de rodilla en perros
Fonte: Int. j. morphol;31(1):280-286, mar. 2013. ilus.
Idioma: en.
Resumo: This study evaluated the effect of oral glucosamine and intramuscular injection (IM) of snail mucin on the progression of experimental osteoarthritis (OA) in dogs. Twenty adult mongrels with mean body weight (12.4±1.8 kg) were used. Experimental OA was induced surgically using the groove model. The dogs were randomly divided into three groups following radiographic evidence of OA. Group one (control) comprised of ten dogs treated with normal saline twice weekly for four weeks following OA. Group two comprised of five dogs treated with 10mg/kg of oral glucosamine daily for four weeks. Group three comprised of five dogs treated with 5mg/kg intramuscular injection of 5% solution of snail mucin twice weekly for four weeks. Blood was obtained from the cephalic vein before surgical arthrotomy, after surgical arthrotomy, immediately after radiographic confirmation of OA (Week 0) and at two weeks interval up to 4 weeks of treatment. Efficacy of the drugs was assessed by changes in plasma IL-6 and MMP-3, while safety was determined using the changes in packed cell volume (PCV), total white blood cell counts (WBC) and observable adverse reactions associated with the administration of the drugs. In this study, the PCV and WBC did not differ significantly (P> 0.05) from the control group. Plasma IL-6 and MMP-3 were significantly (P< 0.05) lower both in glucosamine-treated and snail mucin-treated dogs up to week 4 of treatment when compared with the control group. However, there were no significant (P > 0.05) differences in IL-6 and MMP-3 between the two treatment groups. In addition, painful swelling at the site of injection was observed in dogs treated with snail mucin, while no adverse reaction was observed in dogs treated with oral glucosamine. It was therefore concluded that both oral glucosamine and IM injection of snail mucin comparably modified the progression of OA. However, owing to the adverse reaction noted with IM injection of snail mucin, further study is required to determine the most appropriate route of administration.

Se evaluaron los efectos de la glucosamina oral y la inyección intramuscular (IM) de mucina de caracol en la progresión de la osteoartritis (OA) experimental en perros. Fueron utilizados 20 perros mestizos adultos con un peso medio de 12,4±1,8 kg. La OA experimental se indujo quirúrgicamente mediante el modelo de ranura. Los animales se dividieron aleatoriamente en tres grupos después de la evidencia radiográfica de OA. El grupo 1 (control, 10 perros) fue tratado con una solución salina normal dos veces por semana durante cuatro semanas. El grupo 2 (5 perros) fue tratado con 10 mg/kg de glucosamina oral al día por cuatro semanas, y el grupo 3 (5 perros) fue tratado con 5 mg/kg IM de una solución de mucina de caracol al 5% dos veces por semana durante cuatro semanas. Se obtuvieron muestras de sangre desde la vena cefálica previo a la artrotomía quirúrgica, después de la artrotomía e inmediatamente después de la confirmación radiográfica de OA (semana 0), y en el intervalo de dos semanas hasta cuatro semanas de tratamiento. La eficacia de los fármacos se evaluó por los cambios plasmáticos de IL-6 y MMP-3, mientras que la seguridad, se determinó por los cambios en el volumen del hematocrito (VH), el recuento total de glóbulos blancos (RGB), y la observación de reacciones adversas asociadas a la administración de fármacos. El VH y RGB no difirieron significativamente (P>0,05) en el grupo control. Los niveles de IL-6 y MMP-3 plasmática fueron significativamente más bajas (P<0,05) en los perros tratados con glucosamina y mucina de caracol hasta 4 semanas, en comparación con el grupo control. Sin embargo, no hubo diferencias significativas (P>0,05) en la IL-6 y MMP-3 entre los dos grupos de tratamiento. Además, se observó un edema doloroso en el sitio de inyección de los perros tratados con mucina de caracol. En los perros tratados con glucosamina oral no se observó reacción adversa. Se concluye que tanto la glucosamina oral y la inyección IM de mucina de caracol modifican comparablemente la progresión de OA. Sin embargo, debido a la reacción adversa observada con la inyección IM de mucina caracol, se necesitan estudios adicionales para determinar la vía de administración más adecuada.
Descritores: Osteoartrite do Joelho
Glucosamina/administração & dosagem
Mucinas/administração & dosagem
-Caramujos/química
Administração Oral
Interleucina-6/sangue
Progressão da Doença
Metaloproteinases da Matriz/sangue
Modelos Animais de Doenças
Injeções
Limites: Animais
Cães
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Brasil
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Id: biblio-1278437
Autor: Rodrigues, Cândido Carvalho; Caixeta, Maxwell Batista; Rocha, Thiago Lopes.
Título: New Insights into the Gametogenesis of Biomphalaria glabrata (Mollusca, Gastropoda, Pulmonata): Implications for Histopathological Assessment
Fonte: Braz. arch. biol. technol;64:e21200574, 2021. tab, graf.
Idioma: en.
Projeto: Fundação de Amparo à Pesquisa do Estado de Goiás; . Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
Resumo: Abstract The reproductive system has a fundamental role in population dynamics and several reproduction strategies have been shaped by the environment over time. Many environmental pressures are generated by releasing pollutants, as endocrine disruptors, that can affect the reproductive system of individuals, among them invertebrates. The freshwater snails Biomphalaria spp. are used as biomonitor in several ecotoxicological studies; however, there are few studies about gametogenesis and morphology of reproductive snail cells, which could be used as a new biomarker. In this sense, the current study aims to characterize Biomphalaria glabrata gametogenesis, bringing new histomorphometric parameters for germinative cells. Results showed that the hermaphrodite tissue is formed by several acini with simple pavement epithelium with germinative and somatic cells. Oogenesis was classified into five developmental stages (OI to OV) according to diameter, nucleus area, total area, and follicular cell development, and then classified into previtellogenic and vitellogenic oocytes. The spermatogenesis was classified into spermatogonia (Spg), spermatocytes (Spc) and spermatids that were subdivided into five stages (Spt I to Spt V) according to cytoplasm losing, and nucleus spiralization along with Sertoli cells development. Thus, the present study highlights the gametogenesis of B. glabrata with new histomorphometric parameters, which can be an important tool for ecotoxicological and molluscicidal developmental further studies.
Descritores: Oogênese
Caramujos
Espermatogênese
Organismos Hermafroditas
-Técnicas, Medidas, Equipamentos de Medição
Ecotoxicologia/métodos
Responsável: BR1.1 - BIREME


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Carvalho, Omar dos Santos
Caldeira, Roberta Lima
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Id: biblio-842828
Autor: Guerino, Laura Rocha; Pecora, Iracy Lea; Miranda, Marcel Sabino; Aguiar-Silva, Cryslaine; Carvalho, Omar dos Santos; Caldeira, Roberta Lima; Silva, Reinaldo José da.
Título: Prevalence and distribution of angiostrongylus cantonensis (nematoda, angiostrongylidae) in achatina fulica (mollusca, gastropoda) in baixada santista, São Paulo, Brazil
Fonte: Rev. Soc. Bras. Med. Trop;50(1):92-98, Jan.-Feb. 2017. tab, graf.
Idioma: en.
Projeto: Fundação de Amparo à Pesquisa do Estado de São Paulo.
Resumo: ABSTRACT INTRODUCTION Angiostrongylus cantonensis is causes eosinophilic meningoencephalitis in humans. Worldwide expansion of this nematode is linked to the dispersion of their hosts. This study aimed to determine the prevalence of A. cantonensis infection in Achatina fulica in the nine municipalities that make up Baixada Santista, São Paulo, Brazil. METHODS Angiostrongylus cantonensis larvae were analyzed using optical microscopy. We performed polymerase chain reaction and restriction fragment length polymorphism using restriction endonuclease ClaI, directed to the internal transcribed spacer region 2 of A. cantonensis larval DNA. RESULTS Of the 540 snails analyzed, 117 (21.7%) were infected by A. cantonensis. For morphological and morphometric analyses, 60 larvae were used. Second-stage larvae were, on average, 358.2µm long and 26.4µm wide, while third-stage larvae were, on average, 450µm long and 21.12µm wide. The tails of the larvae ended in a fine tip. CONCLUSIONS All municipalities comprising Baixada Santista had A. fulica that were naturally infected with A. cantonensis. All of the observed characteristics were typical of the species.
Descritores: Caramujos/parasitologia
Angiostrongylus cantonensis/isolamento & purificação
Vetores de Doenças
-Caramujos/classificação
Brasil
Dinâmica Populacional
Reação em Cadeia da Polimerase
Densidade Demográfica
Angiostrongylus cantonensis/anatomia & histologia
Angiostrongylus cantonensis/genética
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-1041480
Autor: Fernandez, Monica Ammon; Silva, Elizangela Feitosa da; Esteves, Rafael Alves; Thiengo, Silvana Carvalho.
Título: Snail transmitters of schistosomiasis and other mollusks of medical and economic importance at the simplício queda única hydroelectric plant, southeast Brazil
Fonte: Rev. Soc. Bras. Med. Trop;51(5):689-694, Sept.-Oct. 2018. graf.
Idioma: en.
Projeto: Instituto Oswaldo Cruz/Fundação Oswaldo Cruz and Furnas Centrais Elétricas.
Resumo: Abstract INTRODUCTION This paper presents the results of an extensive survey of freshwater mollusks in the Simplício Queda Única Hydroelectric Development area, Southeast Brazil. METHODS Mollusks were collected between 2008 and 2013. All specimens were examined for the presence of larval trematodes. RESULTS In total, 12,507 specimens classified into 16 genera were obtained. Known snail vectors of schistosomiasis and fascioliasis and exotic species were identified, and new records are reported. CONCLUSIONS No specimens parasitized by larval trematodes of medical interest were detected. However, the results reinforce the importance of surveillance in study areas vulnerable to the occurrence of schistosomiasis transmission.
Descritores: Centrais Elétricas
Caramujos/classificação
Esquistossomose mansoni/transmissão
Vetores de Doenças/classificação
Água Doce/parasitologia
-Caramujos/parasitologia
Brasil
Densidade Demográfica
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-1126567
Autor: Leyva-Hernández, Luis Manuel; Lumpuy-Castillo, Jairo; Fundora-Mirabal, Jorge A.
Título: Hallazgo importante en el caracol gigante africano / Important finding in the giant African snail
Fonte: Rev. cuba. invest. bioméd;39(1):e496, ene.-mar. 2020.
Idioma: es.
Descritores: Caramujos/patogenicidade
Angiostrongylus cantonensis/patogenicidade
-Estudantes de Medicina
Tipo de Publ: Carta
Responsável: CU1.1 - Biblioteca Médica Nacional


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Id: biblio-1126580
Autor: Hernández Ferreras, Kiria; Sánchez Aldereguía, Sonia; Gómez Pérez, David; Dorta Contreras, Alberto Juan.
Título: Evidencias clínico-epidemiológicas vinculadas a Lissachatina fulica en un adulto con meningoencefalitis eosinofílica causada por Angiostrongylus cantonensis / Clinical-epidemiological evidence related to Lissachatina fulica in an adult with eosinophilic meningoencephalitis caused by Angiostrongylus cantonensis
Fonte: Rev. cuba. invest. bioméd;39(1):e590, ene.-mar. 2020. graf.
Idioma: es.
Resumo: Introducción: El helminto Angiostrongylus cantonensis es un parásito habitual en los pulmones de la rata y puede ocasionar meningoencefalitis eosinofílica en el hombre cuando se pone en contacto con las larvas por ingestión accidental. En Cuba es endémico y el riesgo de contraerlo aumenta con la entrada del caracol gigante africano en el país. Objetivo: Describir las acciones desarrolladas por las autoridades sanitarias locales para el control del caracol gigante africano entre 2016 y 2018 y la aparición de un paciente en 2018 con meningoencefalitis eosinofílica causada por Angiostrongylus cantonensis vinculado epidemiológicamente con la presencia de este caracol. Métodos: Se realizó un estudio cualitativo a partir de un grupo focal con el que se trabajó ante la aparición del caracol gigante africano en un área de salud del municipio San Miguel del Padrón. Se realiza una encuesta semi-estructurada. Resultados: Se trazaron las estrategias para la erradicación de la especie invasora a partir de un trabajo comunitario. Dos años después, se observa nuevamente el caracol gigante africano y un paciente con meningoencefalitis eosinofílica epidemiológicamente asociado a Angiostrongylus cantonensis. Conclusiones: Las acciones realizadas entre 2016 y 2018 resultaron ser insuficientes por el nuevo avistamiento del caracol en el área, con el agravante de encontrar un paciente con meningoencefalitis eosinofílica epidemiológicamente asociado con el molusco(AU)

Introduction: Helmint Angiostrongylus cantonensis is a natural parasite in the lungs of ratas. Ocassionally it can produced an eosinophilic meningoencephalitis in men by larvae accidental ingestion. Methods: A qualitative study was performed from a focal group by a semi-structural survey in a health area from San Miguel del Padrón municipality. Objectives: To describe the actions developed by the local sanitarian authorities for the control of African giant snails between 2016 and 2018 and the appearance of a patient suffering from eosinophilic meningoencephalitis due to Angiostrongylus cantonensis linked to the presence of this snail. Results: It has been established an eradication strategy for the elimination of this invasive species based on a community work. Two years later, it was observed again the giant African snail in the area with a patient suffering from Angiostrongylus cantonensis eosinophilic meningoencephalitis epidemiologically associated. Conclusions: The 2016 actions were not efficient due to the emerging vector and the further finding of a patient linked with the parasite(AU)
Descritores: Caramujos
Espécies Introduzidas
-Angiostrongylus cantonensis/patogenicidade
Estudos de Avaliação como Assunto
Erradicação de Doenças/métodos
Meningoencefalite/etiologia
Meningoencefalite/prevenção & controle
Limites: Humanos
Responsável: CU1.1 - Biblioteca Médica Nacional



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