[Field survey on the freshwater snails in Cheju Province(Quelpart lsland), Korea: Especially on presence or not of Parafossarulus manchouricus]
The question of infectivity and prevalence of Clonorchis sinensis in Cheju province (Quelpart Island) was arisen to authors since the several surveys on the endemic diseases were performed in this island. Therefore, authors decided to solute this question. Then the survey on the possible second intermediate host of Clonorchis sinensis was performed and reported already with negative finding. At present time, authors carried out the collection of all kinds of fresh-water snails through all areas of this island, to confirm the presence or not of Parafossarulus manchouricus, the only first intermediate host of Clonorchis sinensis in Korea. And the following results were obtained. 1)The fresh-water snails collected in the survey were Semisulcospira libertina Gould and Lymnaea ollula Gould. 2)Parafossarulus manchouricus Bourguigant was not collected in this island. 3)It is confirmed that the Clonorchis sinensis can not be prevalent in this island.
Kang
Suck Young
SY
Deparment of Internal Medicine and Institute of Endemic Diseases, College of Medicine, Seoul National Univerity, Korea.
Loh
In Kyu
IK
Park
Yung Hoon
YH
Kim
Byung Chan
BC
Lim
Too Bong
TB