title: [Epidemiological characteristics and risk factors of hospital patients with clonorchiasis].
abstract: OBJECTIVE
  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.
  
  
  METHODS
  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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  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.
authors.forename: Xiao-li
authors.initials: XL
authors.lastname: Zhang
authors.forename: Xiao-bei
authors.initials: XB
authors.lastname: Chen
authors.forename: Ji-wei
authors.initials: JW
authors.lastname: Zhu
authors.forename: Jing
authors.initials: J
authors.lastname: Shu
authors.forename: Su
authors.initials: S
authors.lastname: Han
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D003003:Clonorchiasis / Q000175:diagnosis / Q000453:epidemiology* / Q000469:parasitology / Q000628:therapy; D003004:Clonorchis sinensis / Q000302:isolation & purification / Q000502:physiology; D005243:Feces / Q000469:parasitology; D005260:Female; D005399:Fishes / Q000469:parasitology; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D033541:Palaemonidae / Q000469:parasitology; D012307:Risk Factors; D017747:Seafood / Q000469:parasitology; D055815:Young Adult