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

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.

Food-Borne Parasitic Diseases

It is obvious that the general status of parasitic infections in Korea has shown a marked decrease, particularly in soil-transmitted helminthic infections. However, food-borne parasitic infections are still regarded as the major parasitic diseases of medical importance in Korea. Generally, the parasitic infections may occur from the following sources: by contaminated soil, water, vegetable and fruits, and other animals as food containing the parasites at their immature infective stage, in association with a domestic or wild animal harboring the parasite, and an ectoparasite that transmits the parasite by blood sucking. Human food-borne parasitic infections result from the consumption of undercooked or raw fish, shellfish, snails, vertebrates, and water plants as a food. These infections are significantly related to human behavioral patterns based on socioeconomic and cultural conditions and are linked with the biological and physical environments. Most of food-borne parasitic infections are considered as all parasitic zoonoses to man and animals. To understand the current status of food-borne parasitic infections in Korea, the author presents the list of overall food-borne parasitic infections caused by protozoan infection (toxoplasmosis), trematode infections (clonorchiasis, metagonimiasis, and some intestinal trematodiases), nematode infections (anisakiasis and trichinosis), and others with a briefly reviewed.