Processing query, please wait...
This platform makes it easy to explore and analyze data from the Vaccine Adverse Event Reporting System (VAERS), with a focus on adverse event reports related to vaccines, especially during the COVID-19 pandemic. The centerpiece is a comprehensive flat file—compiled from all historical VAERS data and provided by a leading researcher—that includes cleaned-up and consolidated free-text fields for better accuracy. This file is also available for direct download below for those who want to work with the raw data themselves.
The search tool has grown considerably as of June 2025. In addition to plain-text symptom search, you can now switch to regex mode to run full PCRE regular expressions against the combined symptom text and symptom-entry fields. Nine pre-programmed presets cover common research categories—female and baby, fetus, infant, male reproductive, female pronoun, male pronoun, and heart/vascular—and can be invoked from the preset dropdown. A field search row lets you target any CSV column directly; for example, entering a lot or batch number in the VAX_INFO field will return every report linked to that batch. All filters combine with AND logic and results stream progressively to the page as the dataset is scanned.
Inspired by analyses from platforms like deepdots.substack.com, this work addresses longstanding challenges in the VAERS data: missing free-text fields, deleted follow-up reports, and lot-code discrepancies. A consolidated flat file of all changes across drops is currently being assembled and may appear on this site in the near future. Also take a look at charts generated at chart.vaersdata.org.
Download the raw data: Global data covers drop deltas up to approximately 2023; national data is from a single drop, last updated 10/25/2025.
Caution: This site is experimental. Accuracy and reliability are not guaranteed.