No abstract available.
Clonorchis sinensis*

The survival ability of the larve of Clonorchis sinensis in raw fish dish prepared by traditional culinary method in NghiaLac commune, NghiaHung District,NamDinh province and the larve of Paragonomus heterotrimus in grilled crabs processed in KhanhHoa commune, LucYen district, YenBai province was investigated..In this raw fish dish, 93-95% of the microcerca of Clonorchis sinensis and in this grilled crab, 23,3-65% of microcerca had been living
Fishes ; Clonorchis sinensis ; epidemiology

A survey concerning the infestation of clonorchis sinensis in human was conducted in 4 communes of Ninh Binh and Nam Dinh provinces, from each, 100 households with their members of above 6 years old of age were enrolled randomly. Results showed a prevalence of 31.3 – 37.3% in Nam Dinh and 22.5% in Ninh Binh epidemic areas. The prevalence in male subjects was higher than in female (45.5 –47.6% versus 10.9 – 26.1%). The age group of 40-49 years old had had the highest prevalence (51.9%). There, 35.9 – 80.4% of people had consumed raw fish.
Opisthorchis ; Epidemiology ; Clonorchis sinensis

The survival ability of the larvae of Clonorchis sinensis in raw fish dish prepared by traditional culinary method in Nghia Lac commune, Nghia Hung District, Nam Dinh province and the larvae of Paragonimus heterotrimus in grilled crabs processed in Khanh Hoa commune, Luc Yen district, Yen Bai province was investigated. In this raw fish dish, 93-95% of the microcerca of Clonorchis sinensis and in this grilled crab, 23.3-65% of microcerca had been living
Clonorchis sinensis ; Fishes ; Paragonimus

Clonorchis sinensis, the most widespread liver fluke of the parasite localized in liver and biliary tract, threats at least 19 millions of people in the world. The distribution of C. sinensis over almost all China (except the West-Northern area) and Taiwan, Korea, Japan and Northern regions of Vietnam. Since the first record of C. sinensis in Vietnam last century, up to date the disease has been reported from at least 12 provinces of the country. At the certain epidemiological foci, the rate of C. sinensis infection has not decreased but, in inverse, it seems to have tendency to increase. This review follows the worldwide and local literature in the domain to provide a brief summary on the distribution and status of C. sinensis infection and in the world, particularly in Vietnam.
Clonorchis sinensis ; Epidemiology

A region of mitochondrial cytochrome oxidase 1 gene (coxl) for Clonorchis sp samples from the provinces of Thanh Hoa and Nam Dinh, and Opisthorchis sp from human in Phu Yen province, Vietnam was analyzed by PCR. Nucleotide sequence of these coxl fragments was used to compare with Opisthorchis viverrini, strain Khon Ken (Thailand) and Clonorchis sinensis sequences originated from China and Korea. The results revealed that nucleotide sequence of Opisthorchis sp from Vietnam had absolute homology to O. viverrini (Thailand) but different from C. sinensis (from China and Korea). Clonorchis sp from Vietnam was similar with Clonorchis sinensis from China and Korea. Opisthorchis sp isolated in Phu Yen is, thus, molecularly indentified as Opsithorchis viverrini and Clonochis sp in Thanh Hoa and Nam Dinh is Clonorchis sinensis. Two species are different in morphology and molecular level.
Mitochondria ; Clonorchis sinensis

No abstract available.
Clonorchiasis* ; Clonorchis sinensis

4826 stool samples collected from 5 communes were examined by Kato- Katz technique. The infection rate of clonorchis sinensis was 33,9% in average (22,5% to 37,3%). The infection rate in male was higher than in female by 4 times and highest in 40- 49 age group (51,9%). The habit of eating raw fish is very common in this area (55,6%- 80,4%). The adult worms from patients in these study sites were identified as clonorchis sinensis
Clonorchis sinensis ; epidemiology ; Fishes ; Helminths

In order to study host-parasite relationship in trematode, the susceptibility in rabbits of Clonorchis sinensis were examined. A certain number of metacercariae of C. sinensis were administered orally to rabbits, and rats and dogs were used to compare with rabbits. the results were summerized as follows: The rabbits were successfully infected with metacercariae of C. sinensis in all case of the groups given 10 to 500 each. But the highest recovery rate of the worm was 33.0 percent in the case given 100 metacercariae. In the early stage of infection, the worms were hardly found, but 10 days after the infection, the number of worms were detected easily. Three months after the infection, the recovery rate of worms was 31.3 percent in the rabbits given 300 metacercariae. The recovery rates of the worms in two months after the infection were 27.4 percent in rabbits, 51.0 percent in rats and 54.6 percent in dogs. Morphologically the body length and the body width markedly increased in the period until 10 days after the infection, and after that the genital organs began to get mature gradually while the growth of the body showed down. The measurement of adult C. sinensis recovered from the animals two months after the infection was the largest in rabbits followed by rats and the worms from dogs showed the smallest measurement.
parasitology-helminth-trematoda ; Clonorchis sinensis ; rabbit ; biology

The pattern of sensory papillae, chaetotaxy, of the cercaria of Clonorchis sinensis was observed. The chaetotaxy was as follows; 5-6 Ci l, 4-5 Ci 2, 5-6 Ci 3 at lst row, 4 Cii 1, 2 Cii 2, 4 Cii 3, 5-6 Cii 4 at 2nd row, 3-4 Ciii 1, 2-3 Ciii 2 at 3rd row, and 2 Civ 1, 2-3 Civ 2, 2-3 Civ 3, at 4th row, in cephalic region; 2 AiV, l AiD, 2 AiiV, 1 AiiD, 2 AiiiV, 2 AiiiD, 1 AivV, 1 AivD, 1 PiiD, l PiiiD, in ventral(V) and dorsal(D) portions of body. Caudal region revealed 2-2-2-2 formula.
parasitology-helminth-trematoda ; Clonorchis sinensis ; cercaria