Published in Vaccine Weekly, October 4th, 2006
Investigators at the U.S. Centers for Disease Control and Prevention sought "to evaluate the use of immunization registry data to supplement missing or incomplete vaccination data reported by immunization providers (referred to as 'providers' hereafter) in the National Immunization Survey using a cross-sectional, random-digit-dialing, telephone survey to measure vaccination coverage among children aged 19 to 35 months in the United States."
"Four sites with mature (>67% of provider participation in the area) immunization registries were...
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