VAERS is not the best method to evaluate vaccine adverse events

VAERS

The Vaccine Adverse Event Reporting System (VAERS) is one of the systems employed by the US Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) to monitor vaccine safety. VAERS is a post-marketing surveillance program, collecting information about adverse events (including death) that occur after the administration of vaccines to ascertain whether the risk-benefit ratio is high enough to justify the continued use of any particular vaccine.

VAERS, the Vaccine Safety Datalink (VSD), and the Clinical Immunization Safety Assessment Network (CISA) are the major tools used by the CDC and FDA to monitor vaccine safety. These are powerful tools that contradict the trope from anti-vaccine activists that regulatory agencies do not monitor vaccine safety – they do.

This article will review how VAERS works along with its strengths and limitations. However, one thing we will focus on how dumpster diving into the VAERS database without context is a very bad use of statistics.

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