Impact of the change in polio vaccination schedule on immunization coverage rates: a study in two large health maintenance organizations

Pediatrics
R L DavisL E Rodewald

Abstract

In January 1997, one of the most significant changes to United States vaccine policy occurred when polio immunization guidelines changed to recommend a schedule containing inactivated polio vaccine (IPV). There were concerns that parent or physician reluctance to accept IPV into the routine childhood immunization schedule would lead to lowered coverage. We determined whether adoption of an IPV schedule had a negative impact on immunization coverage. A cohort study of 2 large health maintenance organizations (HMOs), Group Health Cooperative and Kaiser Permanente Northern California, was conducted. For analysis at 12 months of age, children who were born between October 1, 1996, and December 31, 1997, and were commercially insured and covered by Medicaid were continuously enrolled; for analysis at 24 months of age, children who were born between October 1, 1996, and June 30, 1997, and were commercially insured and covered by Medicaid were continuously enrolled. The 3 measures of immunization status at 12 and 24 months of age were up-to-date status, cumulative time spent up-to-date, and the number of missed opportunity visits. At both HMOs, children who received IPV were as likely to be up to date at 12 months as were children who...Continue Reading

Citations

Mar 5, 2008·Journal of General Internal Medicine·Douglas ShensonJulie Bolen
Aug 31, 2006·The Pediatric Infectious Disease Journal·Lindsay A ThompsonFrank Chimkin
Nov 30, 2005·BMC Pediatrics·Nancy D LinUNKNOWN Vaccine Safety Datalink Group
Dec 5, 2019·The Cochrane Database of Systematic Reviews·Agustín CiapponiAikant Bhatti

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