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Transparent access to VAERS data for informed decision-making. We present the data as-is, with appropriate context and disclaimers.

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Data source: VAERS (Vaccine Adverse Event Reporting System)

Data through 2026 · Updated quarterly

Built by TheDataProject.ai · © 2026 VaccineWatch

Important: VAERS accepts reports of adverse events following vaccination. For any given report, there is no certainty that the reported event was caused by the vaccine. Reports may contain information that is incomplete, inaccurate, coincidental, or unverifiable. Most reports to VAERS are voluntary, which means they are subject to biases. This data cannot be used to determine if vaccines cause or contribute to adverse events.

⚠️

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.

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Multi-Vaccine Interaction Explorer

When multiple vaccines are administered at the same visit, adverse events get reported under all vaccines given. This tool shows which combinations appear most frequently in VAERS and their associated outcomes.

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⚠️ Important Context

  • • Co-administration is standard practice — multiple vaccines at one visit is routine, especially in childhood schedules
  • • High report counts ≠ higher risk — common combinations naturally have more reports because more people receive them
  • • Deaths and hospitalizations reflect patient outcomes after vaccination, not confirmed vaccine-caused events
  • • VAERS cannot determine if a specific combination caused worse outcomes than individual vaccines

Related Analysis

→ Multi-Vaccine Analysis→ Pediatric Adverse Events→ Dose Comparison Tool→ Onset Calculator