VAERS accepts reports of adverse events and reactions that occur following vaccination. Healthcare providers, vaccine manufacturers, and the public can submit reports to the system. 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. In large part, 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 scientific 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:
VAERS data available to the public include only the initial report data to VAERS. Updated data which contains data from medical records and corrections reported during follow up are used by the government for analysis. However, for numerous reasons including data consistency, these amended data are not available to the public.
Established in 1990, the Vaccine Adverse Event Reporting System (VAERS) is a national early warning system to detect possible safety problems in U.S.-licensed vaccines. VAERS is co-managed by the Centers for Disease Control and Prevention (CDC) and the U.S. Food and Drug Administration (FDA). VAERS accepts and analyzes reports of adverse events (possible side effects) after a person has received a vaccination. Anyone can report an adverse event to VAERS. Healthcare professionals are required to report certain adverse events and vaccine manufacturers are required to report all adverse events that come to their attention.
VAERS is a passive reporting system, meaning it relies on individuals to send in reports of their experiences to CDC and FDA. VAERS is not designed to determine if a vaccine caused a health problem, but is especially useful for detecting unusual or unexpected patterns of adverse event reporting that might indicate a possible safety problem with a vaccine. This way, VAERS can provide CDC and FDA with valuable information that additional work and evaluation is necessary to further assess a possible safety concern.Read More at VAERS.HHS.GOV
We do not change, modify or vet data. We take the downloads, upload them to our server and put a different face on them so they are easier to browse and get quick accurate info from. There are mistakes in the data (impossible dates are usually the most obvious), clearly, but we leave it as we get it.
The reason we built OpenVAERS in part is due to the difficulty in correctly using the Wonder interface. Without understanding the underlying data tables it is hard to get an accurate number out of the system. Here is how you can replicate our death number for COVID. Use the following settings on the Wonder request form:
Step 1. Group By SEX
Step 2. Select All Symptoms (default)
Step 3. Covid 19 (Covid19 Vaccine)
Step 4. ALL LOCATIONS, All Ages, All Genders
Step 5. Event Category: Death (leave the rest alone)
We built openVAERS because we wanted a way to browse reports and do simple searches on the data. Once we had that we decided to make it public.
Additionally, CDC/FDA/HHS provide no number surveys (like the UK Yellow Card system) to the general public. Users frequently make mistakes due to lack of understanding the underlying data when using the VAERS interface, and publish that, so VAERS becomes a source of 'misinformation.' OpenVAERS attempts to fill this gap by providing accurate numbers to the general public.
We update the full dataset weekly when VAERS releases its data.
Please keep in mind, VAERS releases data a week behind.
"The Vaccine Adverse Event Reporting System (VAERS) accepts all reports, including reports of vaccination errors. Guidance on reporting vaccination errors is available if you have additional questions."
"Knowingly filing a false VAERS report is a violation of Federal law (18 U.S. Code § 1001) punishable by fine and imprisonment."Report an Adverse Event Here.
OpenVAERS is a project developed by a small team of people with vaccine injuries or who have children with vaccine injuries. We do not accept donations or solicit fees. There is zero monetization of this site. It is purely created in order to help others browse the VAERS records and to identify the reported signals that may otherwise get missed.
Questions? Comments? Bugs?
Due to the high volume of inquiries, please be patient with response times.
AND PLEASE read the FAQ first.