Low rates of influenza immunization in young children under Ontario's universal influenza immunization program

Pediatrics
Michael A CampitelliAstrid Guttmann

Abstract

To determine physician-administered influenza vaccine coverage for children aged 6 to 23 months in a jurisdiction with a universal influenza immunization program during 2002-2009 and to describe predictors of vaccination. By using hospital records, we identified all infants born alive in Ontario hospitals from April 2002 through March 2008. Immunization status was ascertained by linkage to physician billing data. Children were categorized as fully, partially, or not immunized depending on the number and timing of vaccines administered. Generalized linear mixed models determined the association between immunization status and infant, physician, and maternal characteristics. Influenza immunization was low for the first influenza season of the study period (1% fully immunized during the 2002-2003 season), increased for the following 3 seasons (7% to 9%), but then declined (4% to 6% fully immunized during the 2006-2007 to 2008-2009 seasons). Children with chronic conditions or low birth weight were more likely to be immunized. Maternal influenza immunization (adjusted odds ratio 4.31; 95% confidence interval 4.21-4.40), having a pediatrician as the primary care practitioner (adjusted odds ratio 1.85; 95% confidence interval 1.68-2....Continue Reading

Citations

May 23, 2015·Risk Analysis : an Official Publication of the Society for Risk Analysis·Holly O WittemanBrian J Zikmund-Fisher
Jan 6, 2015·Influenza and Other Respiratory Viruses·Wanitchaya KittikraisakTawee Chotpitayasunondh
Jun 16, 2015·Human Vaccines & Immunotherapeutics·Kevin L SchwartzJeffrey C Kwong
Aug 15, 2014·Journal of Critical Care·Donald A RedelmeierDamon C Scales
Dec 9, 2014·Human Vaccines & Immunotherapeutics·Eve DubéMonique Landry
Apr 14, 2009·American Journal of Infection Control·Mary R NicholsonAnita M Bennett
Apr 3, 2012·American Journal of Infection Control·Terri RebmannEleanor B Peters
Apr 7, 2015·CMAJ Open·Suzanne D TurnerIrfan A Dhalla

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