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Those who want to do serious analysis of the VAERS data and are willing to work with older releases can download a Microsoft Access file with all of the data up to the end of 2020. Unfortunately, VAERS grew so much in 2021 that it exceeded the maximum size allowed for an Access file (two gigabytes). As a result, it is no longer possible to build a VAERS Access file anymore. For those who want to see 2021 data and later, your best source is the government's raw data.
If you do use this Access file, here is what you need to know: This is a 191 megabyte ZIP file. Once downloaded it expands into a 803 megabyte Access file (.mdb).
Access has a query language (SQL) which can do anything with the data. The small table called "Vaccines" is outdated and can be ignored. The larger table called "VAERSDATA" has the real VAERS content:
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