VAERS Event Details

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NEW! Expanded public access to VAERS data

On May 8, 2025, CDC and FDA expanded public access to VAERS data in the WONDER database (wonder.cdc.gov) and in VAERS downloadable files (vaers.hhs.gov) to provide a more complete picture of all reported adverse events following vaccination received. This enhancement is part of a broader CDC and FDA effort to improve transparency and access to vaccine safety data, while continuing to protect patient privacy.

  • Prior to May 8, VAERS public data sets only included the first submitted VAERS report (or primary report) for a patient, vaccine and dose combination.
  • VAERS public data sets now include all subsequent reports (or secondary reports) from the same or different reporters, for the same patient, vaccine, and dose combination.
  • Based on this enhancement, in the downloadable data file, it will appear that additional reports have been added, but these are actually the subsequent or secondary reports that have previously not been included in the public data sets.
  • It’s important to note these new reports are related to already reported events and do not represent additional reports of adverse events.

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Enter a VAERS ID and click "Event Details" to create a new event details report

VAERS ID:

A VAERS ID consists of seven numbers followed by '-1':  1234567-1.
Since all VAERS IDs end with '-1', you may omit that from IDs entered here: 1234567.
Please note that some VAERS IDs start with '0':  0012345-1.

The VAERS ID length increased in the data released in CDC WONDER on 2/12/2021, due to the total number of events reported. Older VAERS IDs with less than 7 numbers now start with a zero. For example, 0123456 replaces 123456.
Content source: CDC WONDER