RESUMO
Background: Phu Tho is a mountainous province in the northwest of Vietnam. People here have the habit to eat raw fish; this is the favorable conditions for small liver fluke (clonorchsis sinensis) circulation and development. \r\n', u'Objectives: 1) To determine infection rate and infection intensity in workers of tea companies in Phu Tho province. 2) To evaluate effectiveness of treatment Clonorchis sinensis by Distocid.\r\n', u'Subjects and methods: Across- sectional survey was carried out in September 2007 in the tea companies in Phu Tho province, 400 peoples (200 male, 200 female), were examined stool samples to find helminthic eggs by Kato-Katz technique.\r\n', u'Results: The cumulative infection rate Clonorchis sinensis was 22.25%, of which a significant difference of the infection rate of clonorchis sinensis was found in males: 27.4% and in females: 16.7%, respectively (p< 0.05). The cure rate by Distocid was 97.7%.\r\n', u'Conclusion: The infection rate of workers in the areas was rather high\r\n', u'Therefore, it is necessary to propagandize and educate for workers and the community understanding of the harmful effects of Clonorchis sinensis and how to prevent small liver fluke disease; changing risk behaviors such as not eating raw fish\r\n', u'