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The Vaccine Adverse Event Reporting System (VAERS) Results[an error occurred while processing this directive]
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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 94,528 total events.
Rows with zero Events Reported are hidden. Use Quick Options above to show zero rows.
| 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:
-
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.
-
Reports may include incomplete, inaccurate, coincidental and unverified information.
-
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.
-
VAERS data are limited to vaccine
adverse event reports received between 1990 and the most recent date for
which data are available.
-
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 than 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 09/10/2021. The VAERS data in WONDER
are updated weekly, yet the VAERS system receives
continuous updates including revisions and new reports for
preceding time periods. Duplicate event reports and/or
reports determined to be false are removed from VAERS.
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.About COVID19 vaccines:
-
For more information on how many persons have been vaccinated in the US for COVID19 to date, see
https://covid.cdc.gov/covid-data-tracker/#vaccinations/.
-
One report may state that the patient received more than one brand
of COVID-19 vaccine on the same visit. This is a reporting error, but
explains why the total number of reports may not equal the total number
of COVID-19 vaccine doses.
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| Help: | See The Vaccine Adverse Event Reporting System (VAERS) Documentation for more information. |
| Query Date: | Sep 21, 2021 9:35:34 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 - 09/10/2021, CDC WONDER
On-line Database.
Accessed at http://wonder.cdc.gov/vaers.html on
Sep 21, 2021 9:35:34 AM |
| Query Criteria: |
| |
| Event Category: | Death; Life Threatening; Permanent Disability; Hospitalized; Emergency Room * |
| State / Territory: | The United States/Territories/Unknown |
| Vaccine Products: | COVID19 VACCINE (COVID19) |
| Group By: | Age; Event Category |
| Show Totals: | True |
| Show Zero Values: | False |
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