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

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

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

Registro de nuevos casos de difilobotriasis humana en Chile (1981-1992), incluído un caso de infección múltiple por diphyllobothrium latum / Record of new cases of human diphyllobothriasis in Chile (1981-1992), including a case of multiple diphyllobotrium latum infection

New records of human diphyllobothriasis in Chile (1981-1992), with a case of multiple diphyllobotrium latum infection