Diphyllobothrium sp. en Canis familiares de la región del subtrópico argentino (Puerto Iguazú, Misiones) / Diphyllobothrium sp. in Canis familiaris from the subtropical area of Argentina (Puerto Iguazú, Misiones)

En este trabajo se informa el hallazgo de huevos de Diphyllobothrium sp. en ejemplares de Canis familiaris (perro doméstico) de Puerto Iguazú, una ciudad subtropical de la provincia de Misiones, Argentina. Durante 2013, en el marco de un relevamiento de la fauna parasitológica de los perros de Puerto Iguazú, se detectaron dos casos positivos en la búsqueda de huevos de Diphyllobothrium sp. La materia fecal de los perros fue recolectada en frascos con formol al 10% y procesada mediante las técnicas de sedimentación de Telemann y de flotación de Sheather. Dado que Misiones no forma parte de la zona endémica de difilobotriasis y considerando, además, su ubicación fronteriza, este hallazgo reviste gran importancia para la salud pública. Se señala la necesidad de actualizar el estado de conocimiento sobre el ciclo de vida de estos parásitos identificando el rango de hospederos intermediarios y definitivos, su potencial zoonótico y la situación epidemiológica en áreas no endémicas

This paper reports the first finding of Diphyllobothrium sp. eggs in Canis familiaris (domestic dog) from Puerto Iguazú, a subtropical city of Misiones province, Argentina. In 2013, two positive cases of Diphyllobothrium sp. eggs were detected during an annual parasitological survey of dogs. Dog feces were collected in vials containing 10% formalin and processed using Telemann's sedimentation and Sheather's flotation techniques. The two cases were detected in rural areas of the municipality. Since Misiones is not a part of the endemic area of diphyllobothriasis and given the fact that it is located in the three-border area of Argentina, Brazil and Paraguay, we consider this finding of great importance to public health. We stress the need for updating the current knowledge about the life cycle of these parasites considering the range of intermediate and definitive hosts, their zoonotic potential, and the epidemiological situation in non-endemic areas

Difilobotriosis humana: Un caso en área no endémica de la Argentina / Human diphyllobothriosis: A case in a non-endemic area of Argentina

La difilobotriosis es una parasitosis intestinal causada por la infección de cestodos del genero Diphyllobothrium. En la Argentina, la Patagonia Andina es considerada una zona endémica para esta parasitosis. La infección por Diphyllobothrium latum no ha sido previamente notificada en la provincia de Mendoza; en este trabajo comunicamos un caso de esta parasitosis que fue confirmada por el análisis de las características morfológicas de los huevos eliminados con la materia fecal de un paciente infectado. Se destaca la necesidad de información y capacitación de los profesionales de la salud en el diagnóstico y tratamiento de parasitosis no endémicas.

Diphyllobothriosis is an intestinal parasitosis caused by cestodes infection of the genus Diphyllobothrium. In Argentina, the Andean Patagonia is considered an endemic area for this parasitosis. Diphyllobothrium latum infection has not been previously reported in the province of Mendoza, Argentina. We are now reporting then the first case. Diphyllobothriosis was confirmed by examination of morphologic characteristics of the eggs eliminated in the patients' feces. These results suggest the requirement of a more specific training of health workers in the diagnosis and treatment of non endemic parasitosis. We want to emphasize the need of health workers' education on diagnosis and treatment of endemic and non-endemic parasitosis.

Diphyllobothrium latum infection in a non-endemic country: case report / Infecção pelo Diphyllobothrium latum em país não endêmico: relato de caso

Diphyllobothriasis, which is rarely described in Brazil, was reported initially as a travelers’ disease and as an accidental infection in individuals who ate raw freshwater fish. This report aims to present the case of a 20-year-old patient with confirmed Diphyllobothrium latum infection.

A difilobotríase, raramente descrita no Brasil, foi referida inicialmente como doença de viajantes e como infecção acidental em indivíduos que se alimentam com peixe cru de água doce. Este relato objetiva apresentar o caso de uma paciente de 20 anos com infecção confirmada pelo Diphyllobothrium latum.

Acuicultura y salud pública: La expansión de la difilobotriasis en Chile y el mundo / Aquaculture and public health: The emergence of diphyllobothriasis in Chileand the world

Recent clinical and epidemiológica! information, an analysis of the literature, and study of the technical aspects of Chilean salmon aquaculture indicate that this activity has the ability to expand the range of diphyllobothriasis caused by the fish tapeworm Diphyllobothrium latum. Evidence for expansion of the range of the fish tapeworm includes the emergences of clinical cases in Brazil related to consumption of salmon produced in Chile. Expansion of the range of this parasite is also suggested by an increase of its geographical range in Chile, beyond its previously endemic foci in the lakes of Regions IX and X. Prevention of further dissemination of this parasitic disease rests on an improvement of sanitation and sewage disposal around the lakes of Regions IX, X and XI in Chile, improvement in aquaculture methods including curtailing the use offish tapeworm-contaminated lakes to grow juveniles forms ofsalmonids and more measures to decrease the number of salmonid escapees from marine pens to prevent their return to rivers and lakes carrying the infestation. Moreover, tracking the origin ofjuveniies in marketed salmon, determining the presence of plerocercoids in them, and increased education of the public regarding the potential dangers of eating raw fish should also be implemented. Only by stimulating the dialogue between the industry, consumers and state regulators will it be possible to implement appropriate measures to prevent further expansion of this parasitic disease by salmon aquaculture.

A Case of Diphyllobothrium latum Infection in a Patient with Abdominal Pain / 대한소화기학회지

The growing popularity of eating raw fish has resulted in increase of certain human parasitic infection, such as diphyllobothriasis. Even though, upper and lower gastrointestinal endoscopy reveal no specific abnormality, if a patient complains of persistent abdominal pain, we should consider the possibility of parasitic infection. Careful history taking and stool examination can avoid further invasive study. We report a case of Diphyllobothrium latum infection in a patient with vague abdominal pain who showed normal finding on endoscopy.

Diphyllobothrium latum: relato de caso no Brasil / Diphyllobothrium latum: case report in Brazil

Difilobotriose é causada em humanos pela infeccão com vermes adultos do gênero Diphyllobothrium adquiridos pelo consumo de peixe cru ou mal cozido. Diphyllobothrium latum foi confirmado pelo exame dos proglotes grávidos e típicos ovos operculados nas fezes. O paciente havia comido crustáceos e peixes. É o relato do primeiro brasileiro infectado.

The first confirmed case of Diphyllobothrium latum in Brazil

Diphyllobothriasis is an infection of the small intestine by the broad tapeworm Diphyllobothrium sp. The associated symptomatology is nonspecific, but megaloblastic anemia is a well-described complication. Although the infection is common in temperate regions, descriptions in South America have so far been limited to Chile, Peru, and a few cases in Argentina. This paper presents the first confirmed Brazilian case of diphyllobothriasis. A 29-years-old woman living in Salvador (state of Bahia) apparently acquired the infection from eating sushi. The diagnosis was based on fecal examination that revealed a large quantity of operculated eggs. A single dose of praziquantel (600 mg) was sufficient to cure the infection.

First report of Diphyllobothrium mansoni (Cestoda, Diphyllobothridae) infecting Cerdocyon thous (Mammalia, Canidae) in Brazil

O trabalho descreve a ocorrência de Diphyllobothrium mansoni (Cestoda, Diphyllobothridae) no intestino delgado de um exemplar de Cerdocyon thous (Mammalia, Canidae), proveniente da região de Itatinga, Estado de São Paulo, Brasil. Este é o primeiro relato da presença desse cestódeo em C. thous.

Diphyllobothriosis humana por infección por Diphyllobotrhium pacificum en un niño de 3 años en Antofagasta, Chile / Human diphyllobothriosis by diphyllobotrhium pacificum infection in a 3 years old boy at Antofagasta, Chile

La diphyllobothriosis constituye una zoonosis relacionada con el consumo de carnes crudas o insuficientemente cocida de peces de agua dulce o mar. Se presenta un caso de diphyllobothriosis por Diphyllobothrium pacificum diagnosticado en Antofagasta en un niño de tres años, residente permanente en esta ciudad-puerto del Norte de Chile. El paciente eliminó espontáneamente una estróbila de 55 cm, a partir de la cual se realizó estudio morfométrico de proglótidas y huevos, concluyéndose que se trataba de un ejemplar de D. pacificum. Se administró tratamiento con praziquantel sin que se eliminaran nuevos ejemplares ni huevos, como tampoco se presentó anemia. Se investigó al grupo familiar constituido por cuatro personas sin encontrar otros infectados. Se destaca que los 16 casos de diphyllobothriosis por D. pacificum documentados en Chile, tres corresponden a niños entre 7 y 3 años

Infección por helmintos parásitos en salmón coho, oncorhynchus kisutch, durante su retorno al río Simpson, Chile / Infection by parasitic helmiths in coho sallmon, oncorhynchus kisutch, during their return to Simpson river, Chile

Between may and july 1994, 17 adult returning salmons, oncorhynchus kisutch, were collected in the River Simpson, Chile. All fishes showed infection by plerocercoids of diphyllobothrium sp. in different locations: stomach, spleen, liver, mesenteries and gonads. Infection with larval cestodes of an unidentified species of phillobothriidae was determined in the intestine of seven (41,2 percent) salmons and its prevalences of infection showed significant differences between female and male salmons. The 94,4 percent of total plerocercoids of diphyllobothrium were isolated from the stomach wall. Prevalence and mean intensity of infection by diphyllobothrium sp. did not show significant differences between fishes of different sex

Frecuencia de infección por diphyllobothrium sp cestoda diphyllobothriidae en carnívoros silvestres de Argentina / Diphyllobothrium sp cestoda diphyllobothriidae infection frequency in Argentina wild carnivores

With the aims to determine the infection frequency by tapeworms of Diphyllobothrium genus 30 samples from captive wild carnivores were analyzed. A 30 percent of the animal analyzed was positive to the infection. Whereas the family Procionidae has a high percentage of positivity (60 percent). Canidae have lower infection ratio (20-25 percent). The accuracy for the diagnosis of Diphylobothrium was made by the morphology of scolex, proglottids and eggs. This is the first report of the parasite presence in Argentine wild carnivores

Difilobotriasis humana por diphyllobothrium pacificum: un nuevo caso en Antofagasta, norte de Chile / Diphyllobothrium pacificum human infection: report of one case

We report a 26 years old asymptomatic female that expelled spontaneously a 39 proglottid strobila. The taxonomic study of proglottids and eggs found in the stool examination concluded that the patient was infected by Diphyllobothrium pacificum. This infection was probably acquired by the ingestion of raw fish (Sciaena deliciosa) with lemon in a traditional plate called "cebiche". She was treated with a single dose of praziquantel in a dose of 10 mg/kg body weight. After 24 h of treatment there were no scolices on feces. The patient did not have anemia. All eight family members studied, did no have the infection. A follow up stool examination three months later remained negative

Difilobotriasis humana en la Patagonia, Argentina / Human diphyllobothriasis in Patagonia, Argentina

El objetivo del trabajo fué detectar hospedadores humanos en la zona andino patagónica argentina, teniendo en cuenta las prácticas de pesca desportiva y la importancia de los salmónidos dentro de la zona. entre 1986 y 1995 se implementaron Campañas de Información en los laboratorios de Análisis Clínicos de la región andinopatogónica argentina, destinadas a lograr una detección más eficiente de la difilobotriasis, a través de análisis coproparasitológicos. Adicionalmente, se confeccionaron planillas destinadas a recoger información sobre las características de la infección, del tratamiento y del paciente. Durante este período se detectaron 13 nuevos casos humanos, por identificación directa del parásito o por la presencia de huevos en materia fecal. Las características de las infecciones responden a las descriptas para el género Diphyllobothrium. En la región, los salmónidos son los peces predilectos en la pesca deportiva. Estos peces, frecuentemente parasitados con larvas, constituyen la principal fuente de contagio para el hombre al ser consumidos insuficientemente cocidos o ahumados en frío

Infecciones por taenia sp y otros cestodos intestinales en pacientes de consultorios y hospitales públicos del sector norte de Santiago de Chile: 1985-1994 / Taenia sp and other intestinal cestode infections in individuals from public outpatient clinics and hospitals from the north sector of Santiago, Chile: 1985-1994

During 1985-1994 period, 70,642 parasitological stool examinations were perfomed. The exam was made to each patient which presenting gastrointestinal symptoms or nutritional problems, specially in children. 59,960 out of the 70,642 examinations corresponded to 1 month -15 years old chidren, 4,280 to 16-30 years old individuals and 6,402 to up to 30 years old adults. The infection rates (x 100,000) were: taenia sp, 86; hymenolepis nana, 1,165; diphyllobotrium sp, 4 and hymenolepis diminuta, 1. In this period, 11 cases of infection by taenia saginata were detected, and none taenia solium infection. Although infections rates by intestinal cestodes were higher in males than females, in the taenia sp. infection the difference was not statistical significative. Médico-veterinary control of animals slaughtered in abbatoirs and the improvement of sanitary conditions in the last two decades have contributed to the control of most of human intestinal cestodiases

Algunos helmintos de mamíferos marinos del Perú y su importancia médica / Helminths of sea mammals in Peru and medical importance

Se señalan 6 helmintos que parasitan a mamíferos marinos del Perú, algunos de los cuales son nuevos registros, identificados como: Diphyllobothrium pacificum, Tetrabothrius forsteri, Ogmogaster heptalineatus, Pseudalius inflexus, Halocercus sp. y Corynosoma obtuscens. Dos de estas especies tienen importancia médica.

Primer caso de certeza de Diphyllobothrium latum en Cuba / First certainty case of Diphyllobothrium latum in Cuba

Se describe el primer caso de certeza de Diphyllobothrium latum en Cuba. El diagnóstico se basa en la identificación de proglótides, que muestra las características típicas de este cestodos

Epidemiología de la difilobotriasis en la cuenca del río Valdivia, Chile / Epidemiology of diphyllobothriasis in the Valdivia River basin, Chile

Foram examinadas 1.295 pessoas de seis localidades situadas às margens da bacia do rio Valdivia (Chile), encontrando-se uma prevalência de infecçäo por Diphyllobothrium igual a 1,2% em Rinihue e Las Huellas. Em cäes a prevalência foi de 5,3% e 9,8% em Rinihue e Malihue, respectivamente, näo tendo sido observada infecçäo em gatos nem porcos. Os parasitas obtidos apòs tratamento foram identificados como Diphyllobothrium latum. A infecçäo humana por Diphyllobothrium latum nas áreas afetadas foi produzida pela ingestäo de peixes defumados ou cozidos insuficientemente. A pesquisa realizada em 1.450 peixes pertencentes a 4 espécies introduzidas e 11 autoctones capturadas na bacia do rio Valdivia mostrou a existência de plerocercoides de Diphyllobothrium latum e/ou D. dendriticum nas espécies introduzidas Salmo gairdneri e S. trutta além de outras autoctones. A prevalência ou intensidade média das infecçöes nos peixes bem como o grau de agregaçäo das subpopulaçöes variaram nos diferentes locais estudados. Na bacia do rio Valdivia, alguns peixes atuaram como hospedeiros intermediários e outros como paratênicos das espécies de Diphyllobothrium encontradas. Como medidas de controle nos pontos de difilobotríase nas áreas estudadas sugere-se a melhoria das condiçöes de saneamento básico, educaçäo sanitária e tratamento das pessoas infectadas .