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Status of intestinal parasite infections in inhabitants of Palmar, Guayas Province, Ecuador
SY Cho,JH Kim,* and SH Park*
Department of Parasitology, College of Medicine, Chung-Ang University, Seoul 156-756, Korea.
Abstract
Status of intestinal protozoan and helminthic infections was surveyed in mestizo population living in rural parish of Palmar and its nearby recintos(villages). Three of the surveyed villages were at the Pacific coast and 5 villages were in inner pasture land, located about 100 km west of Guayaquil, the second largest city in Ecuador. One stool sample was examined by one cellophane thick smear for helminth ova and one direct smear stained with Lugol's iodine solution for protozoan cysts. Of 325 persons examined, 66.1% were positive for any ova or cyst. The positive rates were: 18.1% for Ascaris lumbricoides, 19.4% for Trichuris trichiura, 0.6% for hookworm, 3.7% for Hymenolepsis nana, 1.8% for Taenia sp., 19.4% for Entamoeba histolytica, 28.6% for Entamoeba coli, 5.5% for Endolimax nana, 1.5% for Iodamoeba buetschlii, 11.1% for Giardia lamblia and 0.6% for Chilomastix mesnili. Poor supply of potable water was considered the main cause of high prevalence of intestinal protozoan infections.
Figures
Fig. 1 A: Approximate location of the surveyed areas(arrow) in South America. B: Surveyed villages in Guayas Province, Ecuador were the parish of Palmar, and its recintos of Ayangue(1), Jambeli (2), Bambil Desecho (3), Rio Seco (4), Bambil Collao (5), Manantial de Colonche (6) and Sevilla (7).
Table 2 Results of stool examination analysed by age
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