title: Prevalence of Clonorchis sinensis Infection among Residents along 5 Major Rivers in the Republic of Korea.
abstract: Clonorchis sinensis is currently the most important parasite affecting public health problems in the Republic of Korea. We investigated the prevalence of C. sinensis infection among residents living along 5 major rivers in Korea. A total of 42,562 individual stool samples were collected from 37 localities and examined using the formalin-ether sedimentation technique. Helminth eggs were detected in 4,052 (9.5%) residents and 3,586 (8.4%) were infected with C. sinensis. The egg positive rate of C. sinensis in Nakdong, Seomjin, Geum, Yeongsan, and Han River was 11.7%, 9.9%, 6.5%, 3.1%, and 1.0%, respectively. The overall prevalence of clonorchiasis by sex was 11.2% in males and 6.2% in females. The age-prevalence was the highest in the 50-59 years band. It has been reconfirmed that the endemicity of clonorchiasis is higher in southern areas of Korea, especially along Nakdong and Seomjin Rivers. A combination of continuous control programs with health education initiatives is urgently required in these highly endemic areas of clonorchiasis in Korea.
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Young-Il
authors.initials: YI
authors.lastname: Jeong
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Hee-Eun
authors.initials: HE
authors.lastname: Shin
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Sang-Eun
authors.initials: SE
authors.lastname: Lee
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Hyeng-Il
authors.initials: HI
authors.lastname: Cheun
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Jung-Won
authors.initials: JW
authors.lastname: Ju
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Jung-Yeon
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Mi Yeoun
authors.initials: MY
authors.lastname: Park
authors.affiliation: Division of Malaria and Parasite Diseases, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju (Osong) 28159, Korea.
authors.forename: Shin-Hyeong
authors.initials: SH
authors.lastname: Cho
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D002648:Child; D002675:Child, Preschool; D003003:Clonorchiasis / Q000453:epidemiology* / Q000469:parasitology; D003004:Clonorchis sinensis / Q000302:isolation & purification*; D005243:Feces / Q000469:parasitology; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010270:Parasite Egg Count; D015995:Prevalence; D066256:Raw Foods / Q000469:parasitology; D056910:Republic of Korea / Q000453:epidemiology; D045483:Rivers / Q000469:parasitology*; D055815:Young Adult
keywords: 5 major rivers; Clonorchis sinensis; Korea; clonorchiasis; prevalence; riverside resident