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Decrease of Metagonimus yokogawai Endemicity along the Tamjin River Basin

Korean Journal of Parasitology 2008년 46권 4호 p.289 ~ 291
이진주 ( Lee Jin-Ju ) - 서울대학교 의과대학 기생충학교실

김재립 ( Kim Jae-Lip ) - 서울대학교 의과대학 기생충학교실
신은희 ( Shin Eun-Hee ) - 서울대학교 의과대학 기생충학교실
채종일 ( Chai Jong-Yil ) - 서울대학교 의과대학 기생충학교실
김효진 ( Kim Hyo-Jin ) - 서울대학교 의과대학 기생충학교실
 ( Lee Jo-Woon-Yi ) - 서울대학교 의과대학 기생충학교실
 ( Jung Bong-Kwang ) - 서울대학교 의과대학 기생충학교실
김민재 ( Kim Min-Jae ) - 서울대학교 의과대학 기생충학교실
 ( Lee Ji-Youn ) - 서울대학교 의과대학 기생충학교실

Abstract


The Tamjin River which flows from Jangheung-gun via Gangjin-gun to the South Sea was reported to be a highly endemic area of Metagonimus yokogawai infection in 1977 and 1985. However, there were no recent studies demonstrating how much change occurred in the endemicity, in terms of prevalence and worm burden, of metagonimiasis in this river basin. Thus, a small-scale epidemiological survey was carried out on some residents along the Tamjin River basin in order to determine the current status of M. yokogawai infection. A total of 48 fecal samples were collected and examined by the Kato-Katz thick smear and formalin-ether sedimentation techniques. The egg positive rate of all helminths was 50.0%, and that of M. yokogawai was 37.5%, followed by C. sinensis 22.9% and G. seoi 4.2%. To obtain the adult flukes of M. yokogawai, 6 egg positive cases were treated with praziquantel 10 mg/kg in a single dose and purged with magnesium sulfate. A total of 5,225 adult flukes (average 871 specimens per person) of M. yokogawai were collected from their diarrheic stools. Compared with the data reported in 1977 and 1985, the individual worm burdens appeared to have decreased remarkably, although the prevalence did not decrease at all. It is suggested that the endemicity of M. yokogawai infection along the Tamjin River has been reduced. To confirm this suggestion, the status of infection in snail and fish intermediate hosts should be investigated.

키워드

Metagonimus yokogawai;human infection;prevalence;endemicity;Tamjin River
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