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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.

  1. Home
  2. Report an Adverse Event

How to Report a Vaccine Adverse Event

If you or someone you know experienced a health problem after vaccination, you can report it to VAERS. Every report contributes to vaccine safety monitoring and helps protect public health.

Report Online at VAERS

The quickest way to file a report is through the official VAERS online portal. It takes about 15-30 minutes.

Go to VAERS Reporting Portal →

External link to vaers.hhs.gov (official government website)

Who Can Report?

Anyone can report to VAERS. There is no cost, and you don't need medical training.

  • Healthcare providers — Required by law to report certain events (listed in the Vaccine Injury Table) and encouraged to report any clinically significant adverse event.
  • Vaccine manufacturers — Required to report all adverse events they learn about.
  • Patients and caregivers — Encouraged to report any adverse event after vaccination.
  • Anyone else — Family members, friends, lawyers, or other interested parties.

What to Include in Your Report

Gather this information before starting:

  • Vaccine details — Name, manufacturer, lot number, dose number
  • Vaccination date — When the vaccine was administered
  • Onset date — When symptoms first appeared
  • Description — Detailed description of the adverse event
  • Medical records — Relevant lab results, diagnoses, treatments (if available)
  • Patient info — Age, gender, pre-existing conditions, other medications
  • Outcome — Whether the person recovered, was hospitalized, etc.

Tip: Check your vaccination card for the lot number and exact vaccine name. If you don't have all the information, you can still submit a report — partial reports are accepted.

What Happens After You Report

  1. Acknowledgment — VAERS assigns a unique report ID and sends confirmation.
  2. Review — CDC/FDA staff review the report, especially for serious events.
  3. Follow-up — For serious reports, VAERS may request additional medical records or contact you for details.
  4. Database entry — Reports are added to the public VAERS database (typically within 1-4 weeks).
  5. Analysis — CDC/FDA scientists analyze patterns across all reports to detect potential safety signals.

Why Reporting Matters

VAERS is a passive surveillance system — it only works if people report. Studies suggest that only 1-10% of adverse events are actually reported to VAERS (a phenomenon called underreporting).

Every report helps. VAERS was instrumental in detecting:

  • Myocarditis risk after mRNA COVID vaccines
  • Thrombosis with thrombocytopenia (TTS) after J&J/Janssen COVID vaccine
  • Intussusception after RotaShield rotavirus vaccine (led to withdrawal)
  • Guillain-Barré Syndrome association with certain flu vaccines

From Your Report to VaccineWatch Data

The data you explore on VaccineWatch comes directly from VAERS reports like the ones described above. Here's the pipeline:

1You file a report→
2CDC/FDA reviews→
3Added to database→
4CDC publishes CSV→
5VaccineWatch processes→
6You explore the data

Common Questions About Filing VAERS Reports

Do I need a doctor to file a report?
No. While healthcare providers are the most common reporters, anyone can file a VAERS report. Patient-submitted reports provide valuable data, especially for events that occur days or weeks after vaccination when the patient may not see their doctor.

Will filing a report get the vaccine recalled?
No. Individual reports do not trigger vaccine recalls. VAERS uses statistical analysis to identify patterns across many reports. A safety signal requires a consistent pattern, not a single report. When a signal is detected, it is investigated through more rigorous studies before any action is taken.

Is there a time limit for filing?
There is no strict time limit, but reports are most useful when filed as soon as possible after the adverse event. Healthcare providers are required to report certain events within specific timeframes.

Can I file a report for someone else?
Yes. Parents, caregivers, family members, and other representatives can file reports on behalf of the person who received the vaccine and experienced the adverse event.

What if I don't have all the information?
Submit what you have. Partial reports are accepted and still contribute to safety monitoring. Key information includes the vaccine name, vaccination date, symptom onset date, and a description of the event. The lot number is helpful but not required.

Vaccine Injury Compensation

If you believe you or a family member was injured by a vaccine, you may be eligible for compensation through the National Vaccine Injury Compensation Program (VICP). Filing a VAERS report is separate from filing a VICP claim, but VAERS reports can be used as supporting documentation.

The VICP covers vaccines routinely recommended for children and includes a Vaccine Injury Table listing specific conditions and time frames. Claims must typically be filed within 3 years of the first symptom. An attorney is not required but may be helpful for complex cases.

For COVID-19 vaccines administered under Emergency Use Authorization, compensation is handled through the separate Countermeasures Injury Compensation Program (CICP), which has different requirements and timelines.

VAERS by the Numbers (2026)

1.98M+
Total Reports
35+
Years of Data
104
Vaccine Types
50
States + Territories

Common Questions About Filing VAERS Reports

Do I need a doctor to file a report?
No. While healthcare providers are the most common reporters, anyone can file a VAERS report. Patient-submitted reports provide valuable data, especially for events that occur days or weeks after vaccination when the patient may not see their doctor.

Will filing a report get the vaccine recalled?
No. Individual reports do not trigger vaccine recalls. VAERS uses statistical analysis to identify patterns across many reports. A safety signal requires a consistent pattern, not a single report. When a signal is detected, it is investigated through more rigorous studies before any action is taken.

Is there a time limit for filing?
There is no strict time limit, but reports are most useful when filed as soon as possible after the adverse event. Healthcare providers are required to report certain events within specific timeframes.

Can I file a report for someone else?
Yes. Parents, caregivers, family members, and other representatives can file reports on behalf of the person who received the vaccine and experienced the adverse event.

What if I don't have all the information?
Submit what you have. Partial reports are accepted and still contribute to safety monitoring. Key information includes the vaccine name, vaccination date, symptom onset date, and a description of the event. The lot number is helpful but not required.

Vaccine Injury Compensation

If you believe you or a family member was injured by a vaccine, you may be eligible for compensation through the National Vaccine Injury Compensation Program (VICP). Filing a VAERS report is separate from filing a VICP claim, but VAERS reports can be used as supporting documentation.

The VICP covers vaccines routinely recommended for children and includes a Vaccine Injury Table listing specific conditions and time frames. Claims must typically be filed within 3 years of the first symptom. An attorney is not required but may be helpful for complex cases.

For COVID-19 vaccines administered under Emergency Use Authorization, compensation is handled through the separate Countermeasures Injury Compensation Program (CICP), which has different requirements and timelines.

VAERS by the Numbers (2026)

1.98M+
Total Reports
35+
Years of Data
104
Vaccine Types
50
States + Territories

Related Resources

Adverse Events
Understanding VAERS data
Is VAERS Reliable?
Strengths & limitations
VAERS Database
Search & explore
Vaccine Injuries
VICP compensation