Epidemiological study of clonorchiasis and metagonimiasis along the Geum-gang (River) in Okcheon-gun (county), Korea.
The endemic status of clonorchiasis and metagonimiasis along the Geum-gang (River) in Okcheon-gun (County) in Korea was examined. From February to December 2000, stools of total 1,081 inhabitants living in 5 villages were examined. Each stool specimen was examined by both the cellophane thick smear method and the formalin-ether sedimentation technique. Egg-positive cases were further analyzed by Stoll's egg-counting technique, and praziquantel was administered to positive cases. The egg-positive rates for Clonorchis sinensis and Metagonimus species were 9.3% and 5.5%, respectively, and the double infection rate was 3.5%. The numbers of eggs per gram (EPG) of feces of C. sinensis and Metagonimus sp. were 918 +/- 1,463 and 711 +/- 947, respectively. The egg-positive rates for C. sinensis and Metagonimus sp. in the riverside area were 14.2% and 8.4%, respectively, which were significantly higher than those of the inland area (3.2% and 1.7%, respectively). The egg-positive rates of C. sinensis and Metagonimus sp. in males (16.7% and 10.0%) were significantly higher than those of females (3.5% and 1.8%). However, there were no significant differences of EPG values between localities and sexes. The prevalence of clonorchiasis and metagonimiasis in this survey was significantly lower than that in the previous reports. However, there is still a high prevalence of infection with C. sinensis and Metagonimus sp. in this region, especially in the riverside area.
Lee
Gye-Sung
GS
Department of Internal Medicine, Sun General Hospital, Daejeon 301-131, Korea.
Cho
In-Sung
IS
Lee
Young-Ha
YH
Noh
Hyung-Jun
HJ
Shin
Dae-Whan
DW
Lee
Sok-Goo
SG
Lee
Tae-Yong
TY
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D002648:Child; D003003:Clonorchiasis / Q000453:epidemiology* / Q000469:parasitology; D003004:Clonorchis sinensis / Q000302:isolation & purification; D005243:Feces / Q000469:parasitology; D005260:Female; D006578:Heterophyidae / Q000302:isolation & purification; D006801:Humans; D007723:Korea / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D010270:Parasite Egg Count; D015995:Prevalence; D012424:Rural Population; D012737:Sex Factors; D013997:Time Factors; D014201:Trematode Infections / Q000453:epidemiology* / Q000469:parasitology