[Single dose mebendazole for the treatment of Trichuris trichiura and Necator americanus in chemotherapeutic control campaigns in the communities]. / Estudio de dosis única de mebendazol para el tratamiento de Trichuris trichiura y Necator americanus en campañas de control quimioterapéutico en las comunidades.

A study of intestinal parasitism is made in "Argelia Libre" community, Isle of Youth, by means of four coproparasitologic techniques: Kato Kratz, Ritchie, Direct, and Willis. Patients with geohelminths are divided into two groups of treatment: Group A, treated with 500 mg mebendazole in single doses and group B, treated with the classical scheme of 100 mg every 12 hours for three days. Results of treatment are expressed in terms of cure rates and percentage of egg-count reduction. When comparing schemes A and B, no significant differences are found (p less than 0.05). Due to its lower cost and easier administration, the single dosage scheme is recommended for massive chemotherapy of geohelminthiasis in the community.

Parasitismo intestinal importado. / Imported intestinal parasitism

Se realizaron examenes parasitologicos a 1.228 estudiantes africanos que arribaron a nuestro pais, encontrandose un 44% de positividad. Se detectaron 10 especies parasitarias diferentes y se reportan Ascaris lumbricoides (Linneo, 1758), Giardia lamblia (Lambl, 1859) y Entamoeba histolytica (Schaudinn, 1903) como las mas frecuentes. El parasitismo por helmintos dio cifras significativas en relacion con los protozoarios, asi como los de transmision retardada, mostraron resultados superiores a los de caracter inmediato. Strongyloides stecoralis (Bavai, 1876), tuvo su mayor frecuencia en los jovenes adultos de 14-18 anos, no asi la Hymenolepis nana (V. Siebold, 1852), que se distribuyo con mayor intensidad en los ninos de 8-13 anos