[Epidemiological characteristics and risk factors of hospital patients with clonorchiasis]

To investigate the epidemiological characteristics and risk factors of clonorchiasis of hospital patients in Heilongjiang Province, so as to provide the evidence for formulating the control and prevention strategies.

A total of 2,359 suspected patients from human parasitic disease research institute of Harbin medical university were investigated. Totally 6,718 stool samples and 2 359 serum samples were tested by Kato-Katz technique and the enzyme linked immune method re- spectively. Meanwhile, the information of the patients was collected by questionnaires.

Totally 513 suspected patients were infected with Clonorchis sinensis. The infection rate of the suspected patients was higher in the ≥29 group (P < 0.05), and the infection rate and positive rate of blood tests of the rural suspected patients were both higher than those of the urban suspected patients (both P < 0.05). The habit of eating raw fish and shrimp was the risk factor of clonorchiasis.

Clonorchiasis is one of the main food-borne parasitic diseases in Heilongjiang Province. The habit of eating raw fish and shrimp is the risk factor of clonorchiasis.