Abstract

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Background
Keywords
Findings
Authors

Background

In the fall of 2009, Canada undertook a mass vaccination campaign against pH1N1. This report provides an overview of self-reported pH1N1 vaccination coverage of the Ontario population, building on an existing random digit-dialling telephone survey, in which 9,010 Ontario adults participated. Based on the results, 34.5% of Ontario residents were vaccinated: 33.3% of adults aged 18 or older and 38.6% of children and adolescents younger than age 18. Respondents reporting high-risk chronic conditions were significantly more likely to report being vaccinated than were people who did not report such conditions. Determining vaccination uptake for the Ontario population is important in the evaluation of the province's pH1N1 prevention program.

Keywords

immunization, influenza A virus H1N1 subtype, preventive health services, population-based health planning

Findings

The mass vaccination campaign against pH1N1 that Canada undertook in the fall of 2009 was the largest ever conducted in the country. The vaccine became available to Ontario residents October 26, and by December 6, the province had distributed enough doses to cover 81% of the population. Because the vaccine was delivered through public health units, several methods were used to document coverage, making an overall Ontario estimate challenging to compute. This report, based on an existing random digit-dialling telephone survey, provides an overview of self-reported pH1N1 vaccination uptake for Ontario. [Full Text]

Authors

Julie Foisy (1-647-260-7412; julie.foisy@oahpp.ca), Laura C. Rosella, Ruth Sanderson, Badal Dhar and Natasha S. Crowcroft are with the Department of Surveillance and Epidemiology, Public Health Ontario in Toronto. Jemila Seid Hamid is with the Department of Clinical Epidemiology and Biostatistics, McMaster University in Hamilton. Julie Foisy, Laura C. Rosella and Natasha S. Crowcroft are also with the Dalla Lana School of Public Health, University of Toronto.