Timeliness and completeness of routine childhood vaccinations in young children residing in a district with recurrent vaccine-preventable disease outbreaks, Jerusalem, Israel

Euro Surveill. 2019 Feb;24(6):1800004. doi: 10.2807/1560-7917.ES.2019.24.6.1800004.

Abstract

BackgroundChildhood vaccination schedules recommend vaccine doses at predefined ages.AimWe evaluated vaccination completeness and timeliness in Jerusalem, a district with recurrent vaccine-preventable disease outbreaks.MethodsVaccination coverage was monitored by the up-to-date method (vaccination completeness at age 2 years). Timeliness of vaccination was assessed in children (n = 3,098, born in 2009, followed to age 48 months, re-evaluated at age 7 years) by the age-appropriate method (vaccine dose timeliness according to recommended schedule). Vaccines included: hepatitis B (HBV: birth, 1 month and 6 months); diphtheria, tetanus, acellular pertussis, polio, Haemophilus influenzae b (DTaP-IPV-Hib: 2, 4, 6 and 12 months); pneumococcal conjugate (PCV: 2, 4 and 12 months); measles-mumps-rubella/measles-mumps-rubella-varicella (MMR/MMRV: 12 months) and hepatitis A (HAV: 18 and 24 months).ResultsOverall vaccination coverage (2014 cohort evaluated at age 2 years) was 95% and 86% for MMR/MMRV and DTaP-IPV-Hib4, respectively. Most children (94%, 91%, 79%, 95%, 92% and 82%) were up-to-date for HBV3, DTaP-IPV-Hib4, PCV3, MMR/MMRV1, HAV1 and HAV2 vaccines at 48 months, but only 32%, 28%, 38%, 58%, 49% and 20% were vaccinated timely (age-appropriate). At age 7 years, the median increase in vaccination coverage was 2.4%. Vaccination delay was associated with: high birth order, ethnicity (higher among Jews vs Arabs), birth in winter, delayed acceptance of first dose of DTaP-IPV-Hib and multiple-dose vaccines (vs MMR/MMRV). Jewish ultra-Orthodox communities had low vaccination coverage.ConclusionsConsiderable vaccination delay should be addressed within the vaccine hesitancy spectrum. Delays may induce susceptibility to vaccine-preventable disease outbreaks; tailored programmes to improve timeliness are required.

Keywords: childhood vaccination; children; infants; measles; routine vaccinations; toddlers; vaccination completeness; vaccination coverage; vaccination schedules; vaccination timeliness; vaccines and immunisation.

MeSH terms

  • Child
  • Child, Preschool
  • Cohort Studies
  • Diphtheria-Tetanus-Pertussis Vaccine
  • Diphtheria-Tetanus-acellular Pertussis Vaccines / administration & dosage*
  • Disease Outbreaks / prevention & control
  • Female
  • Haemophilus Vaccines
  • Humans
  • Immunization
  • Immunization Schedule*
  • Infant
  • Israel
  • Male
  • Measles-Mumps-Rubella Vaccine / administration & dosage*
  • Poliovirus Vaccine, Inactivated
  • Time Factors
  • Vaccination
  • Vaccination Coverage / statistics & numerical data*
  • Vaccine-Preventable Diseases
  • Vaccines, Conjugate

Substances

  • Diphtheria-Tetanus-Pertussis Vaccine
  • Diphtheria-Tetanus-acellular Pertussis Vaccines
  • Haemophilus Vaccines
  • Measles-Mumps-Rubella Vaccine
  • Poliovirus Vaccine, Inactivated
  • Vaccines, Conjugate
  • diphtheria-tetanus-five component acellular pertussis-inactivated poliomyelitis -Haemophilus influenzae type b conjugate vaccine