Influenza vaccination rates in Ontario children: implications for universal childhood vaccination policy

Vaccine. 2009 Apr 14;27(17):2350-5. doi: 10.1016/j.vaccine.2009.02.017. Epub 2009 Feb 13.


The aims of this study were to estimate influenza vaccination coverage for children during the 2006-2007 influenza season in Ontario, Canada, where universal vaccination is available, and to compare the rate among children aged 6-23 months with corresponding rates from other Canadian provinces that specifically target this high-risk group. We conducted a telephone survey of caregivers of children aged 6 months-11 years that included 4854 children from 3029 households. Ontario's vaccination rate (complete and partial coverage combined) for children aged 2-11 years was 28.3% (95% CI 26.3-30.5%) for healthy children and 36.8% (95% CI 31.4-42.5%) for those with chronic conditions. Immunization coverage of children aged 6-23 months was 24.0% (95% CI 20.6-27.7%) in Ontario, similar to Manitoba's rate of 24.1% but lower than rates in other provinces: Nova Scotia (35.5%), Quebec (41.8% for 1 year olds and 37.7% for 2 year olds during the 2005-2006 season), Saskatchewan (32.5%) and Alberta (52.2%). Universal vaccination in Ontario has achieved modest coverage in children aged 2-11 years, but has been less successful than targeted programs in vaccinating infants aged 6-23 months.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Child
  • Child, Preschool
  • Health Policy*
  • Health Surveys
  • Humans
  • Infant
  • Influenza Vaccines / therapeutic use*
  • Influenza, Human / prevention & control
  • Ontario
  • Orthomyxoviridae / immunology
  • Program Evaluation
  • Vaccination / statistics & numerical data*


  • Influenza Vaccines