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Korean J Parasitol > Volume 32(1):1994 > Article

Original Article
Korean J Parasitol. 1994 Mar;32(1):27-33. Korean.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1994.32.1.27
Copyright © 1994 by The Korean Society for Parasitology
Second report on intestinal parasites among the patients of Seoul Paik Hospital (1984-1992)
S K Lee,*1B M Shin,1N S Chung,1J Y Chai,2 and S H Lee2
1Department of Clinical Pathology, Seoul Paik Hospital, Inje University, Seoul 110-032, Korea.
Received October 04, 1993; Accepted February 28, 1994.


The results of fecal examination for helminth eggs and protozoan cysts in Seoul Paik Hospital during 1984-1992 are reported. Fecal specimens of a total of 52,552 out- or inpatients were examined by formalin-ether sedimentation and/or direct smear method. The overall egg positive rate of helminths was 6.5% and the cyst positive rate of protozoa 2.5%. The egg positive rate (number of positive cases) for each species of helminth was; Clonorchis sinensis 3.2% (1,667), Trichuris trichiura 2.0% (1,089), Metagonimus yokogawai 1.2% (613), Ascaris lumbricoides 0.2% (100), Trichostrongylus orientalis 0.1% (34), Taenia spp. 0.05% (28), Hymenolepis nana 0.03% (18), hookworms 0.03% (17), Paragonimus westermani 0.02% (12), Echinostoma spp. 0.03% (12), Enterobius vermicularis 0.02% (10), Strongyloides stercoralis (larvae) 0.01% (6), and Diphyllobothrium latum 0.004% (2). The cyst positive rate (number of positive cases) for each protozoan was; Entamoeba coli 1.1% (588), Endolimax nana 0.8% (402), Giardia lamblia 0.3% (173), Entamoeba histolytica 0.3% (164), and Trichomonas hominis (trophozoites) 0.004% (2). Viewing from the data of 9 years, it was evident that the prevalence of snail-transmitted helminths such as A. lumbricoides and T. trichiura has been decreasing remarkably, while that of snail-transmitted helminths such as C. sinensis and intestinal protozoans has not.


Fig. 1
Annual trends of the egg positive rate of Trichuris trichiura (T.t.), Clonorchis sinensis (C.s.) and Ascaris lumbricoides (A.i.) among the patients of Seoul Paik Hospital during 1979-1983 (data of Kim et al., 1984) and 1984-1992 (this study).


Table 1
Results of fecal examination for helminth eggs among the patients of Seoul Paik Hospital (1984-1992)

Table 2
Results of fecal examination for protozoan cysts among the patients of Seoul Paik Hospital (1984-1992)

Table 3
Comparison of the results of parasite examination in university hospitals in Korea

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