title: [A nested case control study for risk factors impacting hepatitis B vaccination in Hebei, China].
abstract: OBJECTIVE
  Study the risk factors that impact the effectiveness of mass hepatitis B vaccination, and try to amend them in the future.
  
  
  METHODS
  Based on the national surveillance of hepatitis B, all the 1734 of 1-15 years old children from Hebei Province were enrolled in the present study and they were divided into case and control group according to their sera HBsAg were positive or not.
  
  
  RESULTS
  Mother sera HBsAg positive and the hospital the children were born and earlier year of birth were risk factors.
  
  
  CONCLUSIONS
  The effectiveness of mass neonate hepatitis B vaccination has greatly improved and the future focus should be on finding pregnant HBsAg positive women, and encourage them to give birth in better hospitals, and at the mean time, try to make the neonate hepatitis B vaccination perfect, especially in country areas.
authors.affiliation: Hebei Province Center for Disease Control and Prevention, Shijiazhuang 050000, China.
authors.forename: Jing-Chen
authors.initials: JC
authors.lastname: Ma
authors.forename: Cai-Zhi
authors.initials: CZ
authors.lastname: Han
authors.forename: Shun-Xiang
authors.initials: SX
authors.lastname: Qi
authors.forename: Cha
authors.initials: C
authors.lastname: Tian
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Shou-Jun
authors.initials: SJ
authors.lastname: Zhao
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D002681:China; D006509:Hepatitis B / Q000276:immunology / Q000517:prevention & control* / Q000821:virology; D006510:Hepatitis B Antibodies / Q000097:blood; D017325:Hepatitis B Vaccines / Q000008:administration & dosage* / Q000276:immunology; D006801:Humans; D017589:Immunization Programs / Q000379:methods*; D007223:Infant; D008297:Male; D012307:Risk Factors; D014611:Vaccination
chemical_list: D006510:Hepatitis B Antibodies; D017325:Hepatitis B Vaccines