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Where does the data come from?

Published on
21 April 2022

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VAERS data is primarily from the United States. Approximately 10% of the reports are from nondomestic sources. These are denoted as FR in the VAERS State field. vaers.hhs.gov says "VAERS occasionally receives case reports from US manufacturers that were reported to their foreign subsidiaries. Under FDA regulations, if a manufacturer is notified of a foreign case report that describes an event that is both serious and unexpected (in other words, it does not appear in the product labeling), they are required to submit it to VAERS. It is important to realize that these case reports are of variable data quality and completeness, due to the many differences in country reporting practices and surveillance system quality." (https://wonder.cdc.gov/wonder/help/vaers/VAERS%20Advisory%20Guide.htm)

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OpenVAERS is a private organization that posts publicly available CDC/FDA data of injuries reported post-vaccination. Reports are not proof of causality.