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Index/Topics/VAERS Vaccine Safety

VAERS Vaccine Safety

VAERS is a national vaccine safety surveillance system in the United States, co-managed by CDC and FDA, designed for early-warning and hypothesis-generating rather than proof of causation.

Fact-Checks

2 results
Jan 18, 2026

What are the strengths and limitations of VAERS for detecting vaccine adverse events?

VAERS is the United States’ national, passive vaccine safety surveillance system co-managed by CDC and FDA that accepts any report of an adverse event after vaccination and is designed as an early‑war...

Jan 10, 2026

How do VAERS reports get validated and what percentage have established causality with vaccines?

VAERS is a national, passive early‑warning system that accepts any report of an adverse event after vaccination but does not by itself establish cause and effect, and CDC/FDA follow-up and external st...

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