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.
Interactive tools for exploring VAERS data with proper context and interpretation. Each tool includes important disclaimers and guidance for understanding limitations.
When do vaccine side effects start?
Explore onset timing patterns for different vaccines and see when adverse events typically occur.
Search vaccine lot numbers in VAERS
Look up specific COVID-19 vaccine lot numbers. Heavy disclaimers about interpreting raw counts.
First vs second vs booster analysis
Compare adverse event patterns across different vaccine doses with interactive charts.
Put VAERS numbers in perspective
Transform raw VAERS numbers into meaningful rates and compare to background risks.
Adverse events by age group
See how vaccine adverse event reports are distributed across age groups with interactive charts and gender breakdowns.
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.
Vaccines given together
Explore which vaccines are commonly co-administered and their combined adverse event profiles. 1,514 combinations analyzed.
Who gives vaccines and how
See where vaccines are administered (pharmacy, doctor, military, school) and how (injection, oral, nasal).
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.
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 defect reports by vaccine
Explore birth defect reports in VAERS by vaccine type. Includes critical context about background rates and reporting limitations.
Do side effects go away?
Interactive explorer of recovery status across all vaccines. Compare recovery rates, understand what "not recovered" really means.
How long are vaccine hospitalizations?
Explore hospitalization duration data across all vaccines. Most stays are 1-3 days. Compare patterns by vaccine type.