Based on findings of a systematic review, the Community Preventive Services Task Force recommends immunization information systems on the basis of strong evidence of effectiveness in increasing vaccination rates. Evidence is considered strong, based on the findings from 108 published articles and 132 conference abstracts showing that immunization information systems are effective in increasing vaccination rates and reducing vaccine-preventable disease through their capabilities to (1) create or support effective interventions such as client reminder and recall systems, provider assessment and feedback, and provider reminders; (2) generate and evaluate public health responses to outbreaks of vaccine-preventable disease; (3) facilitate vaccine management and accountability; (4) determine client vaccination status for decisions made by clinicians, health departments, and schools; and (5) aid surveillance and investigations on vaccination rates, missed vaccination opportunities, invalid dose administration, and disparities in vaccination coverage.
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