Clonorchiasis in Korea

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Abstract
Since the first report on the incidence of egg positiveness of Clonorchis sinensis by Matsumoto in 1915, clonorchiasis has been recognized as one of the most important endemic diseases in Korea. Most of the works on clonorchiasis after then had been studied by Japanese workers until 1945. After the Korean War in 1950-1953, health problems of Koreans were extremely aggravated. This gave us attentions for the prevention of contagious diseases as well as parasitic infections in public health point of view. It was greatly recognized that not only ascariasis, hookworm infections, and trichuriasis, but also clonorchiasis and paragonimiasis constitute the important helminthic diseases in Korea. In the late 1950s, several Korean workers conducted studies of C. sinensis on its biology, epidemiology, pathology, clinical symptoms as well as treatment. Thereafter overall epidemiological surveys were carried out actively throughout the country since 1960s. From these surveys, it became clear that endemic areas of clonorchiasis are scattered all over the country along the Nakdong, Kum, Mankyong, Yeongsan and Han rivers. The most extensive and intensive endemic regions were found mainly along the Nakdong river. Since then, clonorchiasis has been one of the most extensively studied subjects during the past 30 years. The present review mainly deals with current results obtained by Korean investigators on the prevalence of clonorchiasis, as well as its biology, epidemiology, pathogenesis, clinical manifestations, diagnosis, treatment, prevention and control.
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