Important: VAERS reports alone cannot determine if a vaccine caused an adverse event. Reports may contain incomplete, inaccurate, or unverified information. Correlation does not equal causation.
Looking for vaccine adverse event data? You're in the right place. VaccineWatch makes VAERS data searchable and understandable — no complex queries needed.
Find any vaccine, symptom, or data point in our database
Browse all 104 vaccines in VAERS. Each vaccine page shows total reports, top symptoms, age distribution, yearly trends, and manufacturer data.
Browse all vaccines →Find any of 1,000+ reported symptoms. See which vaccines are associated with each symptom and how frequently it's reported.
Browse all symptoms →Put two vaccines side by side. Compare their adverse event profiles, severity rates, and symptom distributions.
Compare vaccines →See every vaccine in one sortable table. Sort by reports, deaths, hospitalizations, or severity rates. Filter and search.
Open dashboard →13 specialized tools for deep analysis: onset timing, lot lookups, dose comparisons, severity profiles, and more.
Explore tools →The official way to search VAERS is through CDC WONDER. It's powerful but has a steep learning curve. Here's how VaccineWatch compares:
| Feature | CDC WONDER | VaccineWatch |
|---|---|---|
| Ease of use | Complex query interface | Browse and click |
| Context | Minimal disclaimers | Built-in context on every page |
| Visualization | Tables only | Interactive charts |
| Pre-built pages | None | 85,000+ pages |
| Cross-references | Manual queries | Automatic (vaccine-symptom, vaccine-year, etc.) |
| Analysis articles | None | 23 in-depth analyses |
| Raw data access | Yes (full query power) | Pre-processed for accessibility |
Bottom line: Use VaccineWatch for browsing, exploring, and understanding VAERS data. Use CDC WONDER for specific custom queries that require full database access.