The Vaccine Adverse Event Reporting System (VAERS) Results
VAERS data in CDC WONDER are updated every Friday. Hence, results for the same query can change from week to week.
These results are for 75 total events.
When grouped by VAERS ID, results initially don't show Events Reported, Percent, or totals. Use Quick or More Options to restore them, if you wish.
Click on a VAERS ID to see a report containing detailed information for the event.
Rows with zero Events Reported are hidden. Use Quick Options above to show zero rows.
Some measures are hidden, use Quick or More Options above to restore them.
Notes: |
Caveats: |
VAERS accepts reports of adverse events and reactions that occur following vaccination. Healthcare providers, vaccine manufacturers,
and the public can submit reports to VAERS. While very important in monitoring vaccine safety, VAERS reports alone cannot be used to
determine if a vaccine caused or contributed to an adverse event or illness. The 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 creates
specific limitations on how the data can be used scientifically. Data from VAERS reports should always be interpreted with these
limitations in mind.
The strengths of VAERS are that it is national in scope and can quickly provide an early warning of a safety problem with a vaccine.
As part of CDC and FDA's multi-system approach to post-licensure vaccine safety monitoring, VAERS is designed to rapidly detect
unusual or unexpected patterns of adverse events, also known as "safety signals." If a safety signal is found in VAERS, further
studies can be done in safety systems such as the CDC's Vaccine Safety Datalink (VSD) or the Clinical Immunization Safety
Assessment (CISA) project. These systems do not have the same limitations as VAERS, and can better assess health risks and
possible connections between adverse events and a vaccine.
Key considerations and limitations of VAERS data:
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Vaccine providers are encouraged to report any clinically significant health problem following vaccination to VAERS,
whether or not they believe the vaccine was the cause.
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Reports may include incomplete, inaccurate, coincidental and unverified information.
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The number of reports alone cannot be interpreted or used to reach conclusions about the existence, severity, frequency,
or rates of problems associated with vaccines.
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VAERS data are limited to vaccine adverse event reports received between 1990 and the most recent date for which data are available.
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VAERS data do not represent all known safety information for a vaccine and should be interpreted in the context of other
scientific information.
Some items may have more than 1 occurrence in any single event report,
such as Symptoms, Vaccine Products, Manufacturers, and Event Categories.
If data are grouped by any of these items, then
the number in the Events Reported column may exceed the total number of unique events.
If percentages are shown, then the associated percentage of total unique event reports will exceed 100% in such cases.
For example, the number of Symptoms mentioned is likely to exceed the number of events reported,
because many reports include more than 1 Symptom.
When more then 1 Symptom occurs in a single report, then the percentage of Symptoms to unique events is more than 100%.
More information.Data contains VAERS reports processed as of 3/5/2021. The VAERS data in WONDER are updated weekly, yet the VAERS system receives continuous updates including revisions and new reports for preceding time periods. More information.Values of Event Category field vary in their availability over time due to changes in the reporting form.
The "Emergency Room/Office Visit" value was avaliable only for events reported using the VAERS-1 form, active 07/01/1990 to 06/29/2017.
The "Congenital Anomaly/Birth Defect", "Emergency Room", and "Office Visit" values are available only for events reported using the VAERS 2.0 form, active 06/30/2017 to present.
These changes must be considered when evaluating count of events for these categories.
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Help: | See The Vaccine Adverse Event Reporting System (VAERS) Documentation for more information. |
Query Date: | Mar 15, 2021 7:33:58 AM |
Suggested Citation: |
United States Department of Health and Human Services (DHHS), Public Health Service (PHS), Centers for Disease Control (CDC) / Food and Drug Administration (FDA), Vaccine Adverse Event Reporting System (VAERS) 1990 - 3/5/2021, CDC WONDER On-line Database.
Accessed at http://wonder.cdc.gov/vaers.html on
Mar 15, 2021 7:33:58 AM |
Query Criteria: |
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Age: | 50-59 years; 60-64 years |
Event Category: | Death |
Onset Interval: | 0 days; 1 day; 2 days |
State / Territory: | The United States/Territories/Unknown |
Vaccine Products: | COVID19 VACCINE (COVID19) |
VAERS ID: | All |
Group By: | Age; Vaccine Manufacturer; Event Category; VAERS ID |
Show Totals: | False |
Show Zero Values: | False |
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