title: Comparative assessment of immunization coverage of migrant children between national immunization program vaccines and non-national immunization program vaccines in East China.
abstract: This study aimed to describe the disparities in immunization coverage between National Immunization Program (NIP) vaccines and non-NIP vaccines in Yiwu and to identify potential determinants. A face-to-face interview-based questionnaire survey among 423 migrant children born from 1 June 2010 to 31 May 2013 was conducted. Immunization coverage was estimated according to the vaccines scheduled at different age, the birth cohorts, and socio- demographic characteristics. Single-level logistic regression analysis was applied to identify the determinants of coverage of non-NIP vaccines. We found that NIP vaccines recorded higher immunization coverage compared with non-NIP vaccines (87.9100%- vs 0%-74.8%). Among the non-NIP vaccines, varicella vaccine (VarV) recorded the highest coverage of 85.4%, which was introduced in 1998; while 7-valent pneumococcal conjugate vaccine(PCV7) recorded the lowest coverage of 0% for primary series, which was introduced recently. Lower coverage rate of non-NIP vaccines was significantly associated with more siblings in household, shorter duration of living in the surveyed areas, lower family income, mother with a job, mother with poor awareness of vaccination, and mother with lower education level. We found the immunization coverage rate of non-NIP vaccines was significant lower than that of NIP vaccines. Expansion of NIP to include non-NIP vaccines can provide better protection against the vaccine preventable diseases through increased immunization coverage.
authors.affiliation: a Institute of Immunization and Prevention; Zhejiang Center for Disease Control and Prevention ; Hangzhou , China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Hu
authors.forename: Shuying
authors.initials: S
authors.lastname: Luo
authors.forename: Xuewen
authors.initials: X
authors.lastname: Tang
authors.forename: Linqiao
authors.initials: L
authors.lastname: Lou
authors.forename: Yaping
authors.initials: Y
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Guo
mesh_terms: D002675:Child, Preschool; D002681:China; D005260:Female; D006801:Humans; D007114:Immunization / Q000706:statistics & numerical data; D017589:Immunization Programs; D007223:Infant; D008297:Male; D011795:Surveys and Questionnaires; D014171:Transients and Migrants; D014612:Vaccines / Q000008:administration & dosage*
chemical_list: D014612:Vaccines
keywords: immunization coverage; migrant; national immunization program; public health; vaccines