Use of immunization information systems in ascertainment of COVID-19 vaccinations for claims-based vaccine safety and effectiveness studies

About The Study: The findings of this study of 5.1 million individuals suggested that supplementing COVID-19 claims records with Immunization Information Systems vaccination records substantially increased the number of individuals who were identified as vaccinated, yet potential under-recording remained. Improvements in reporting vaccination data to Immunization Information Systems infrastructures could allow frequent updates of vaccination status for all individuals and all vaccines. 

Authors: Karen Schneider, Ph.D., of OptumServe Consulting in Falls Church, Virginia, is the corresponding author. 

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(doi:10.1001/jamanetworkopen.2023.13512)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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