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.
Analysis Tools
Interactive tools for exploring VAERS data with proper context and interpretation. Each tool includes important disclaimers and guidance for understanding limitations.
Onset Calculator
When do vaccine side effects start?
Explore onset timing patterns for different vaccines and see when adverse events typically occur.
Lot Lookup
Search vaccine lot numbers in VAERS
Look up specific COVID-19 vaccine lot numbers. Heavy disclaimers about interpreting raw counts.
Dose Comparison Tool
First vs second vs booster analysis
Compare adverse event patterns across different vaccine doses with interactive charts.
Risk Context Calculator
Put VAERS numbers in perspective
Transform raw VAERS numbers into meaningful rates and compare to background risks.
Age Explorer
Adverse events by age group
See how vaccine adverse event reports are distributed across age groups with interactive charts and gender breakdowns.
Reporting Timeline
35 years of VAERS data visualized
Interactive timeline of all VAERS reports from 1990-2026. Track trends, compare metrics, and zoom into any time period.
Multi-Vaccine Explorer
Vaccines given together
Explore which vaccines are commonly co-administered and their combined adverse event profiles. 1,514 combinations analyzed.
Administration & Routes
Who gives vaccines and how
See where vaccines are administered (pharmacy, doctor, military, school) and how (injection, oral, nasal).
Dose Series Explorer
1st vs 2nd vs 3rd dose breakdown
Compare adverse event reports across dose numbers for any vaccine. See how patterns change from first dose through boosters.
Severity Profile
Vaccine outcome breakdown vs average
See the complete severity profile for any vaccine — death rates, hospitalization rates, recovery outcomes — compared to the all-vaccine average.
Birth Defects Explorer
Birth defect reports by vaccine
Explore birth defect reports in VAERS by vaccine type. Includes critical context about background rates and reporting limitations.
Recovery Explorer
Do side effects go away?
Interactive explorer of recovery status across all vaccines. Compare recovery rates, understand what "not recovered" really means.
Hospital Duration Explorer
How long are vaccine hospitalizations?
Explore hospitalization duration data across all vaccines. Most stays are 1-3 days. Compare patterns by vaccine type.
Using These Tools Responsibly
- •All tools include important disclaimers about VAERS limitations
- •Raw numbers require context (denominators, background rates, etc.)
- •VAERS data shows correlation, not causation
- •These tools are for education and transparency, not medical advice