title: Comparative estimation of coverage between national immunization program vaccines and non-NIP vaccines in Korea.
abstract: This study aimed to describe the differences in vaccination coverage between National Immunization Program (NIP) vaccines and non-NIP vaccines in Korea and to identify factors affecting the difference. Nationwide face-to-face interview-based questionnaire survey among randomly selected 4,374 participants aged 7-83 months was conducted. Vaccination coverage analyzed according to the birth cohorts, geographic areas, and socio-demographic characteristics. We found that NIP vaccines recorded higher primary vaccination coverage compared to non-NIP vaccines (95.9%-100% vs 30.7%-85.4%). The highest rate was Haemophilus influenzae type b (Hib) vaccine (85.4%), which was introduced in 1996, and the lowest rate was rotavirus vaccine (30.7%), which was introduced recently. On multivariate analysis, having a sibling were significantly associated with lower uptake of Hib vaccine, pneumococcal conjugate vaccine (PCV), and rotavirus vaccine; while, older mother's age and attendance to daycare center were significantly associated with lower uptake of PCV and rotavirus vaccine (P < 0.001). We found differences in the vaccine coverage rate between NIP vaccines and non-NIP vaccines; and the data suggests potential disparity in accessing non-NIP vaccines in Korea. Expansion of NIP to include non-NIP vaccines can provide better protection against the diseases through increased coverage.
authors.affiliation: Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Young June
authors.initials: YJ
authors.lastname: Choe
authors.forename: Jae Jeong
authors.initials: JJ
authors.lastname: Yang
authors.forename: Sue K
authors.initials: SK
authors.lastname: Park
authors.forename: Eun Hwa
authors.initials: EH
authors.lastname: Choi
authors.forename: Hoan Jong
authors.initials: HJ
authors.lastname: Lee
mesh_terms: D000328:Adult; D044466:Asian People; D002648:Child; D002656:Child Day Care Centers; D002675:Child, Preschool; D015331:Cohort Studies; D003710:Demography; D005260:Female; D006192:Haemophilus Infections / Q000517:prevention & control; D006801:Humans; D017589:Immunization Programs; D007223:Infant; D007407:Interviews as Topic; D008297:Male; D015999:Multivariate Analysis; D011008:Pneumococcal Infections / Q000517:prevention & control; D056910:Republic of Korea; D012400:Rotavirus Infections / Q000517:prevention & control; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014611:Vaccination
keywords: Coverage; National Immunization Program; Public Health; Vaccines