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.
wednesday i developed bilateral breast swelling overnight at 0200. chills, headache, fever to 104.1F at 5pm. antibiotics started to rule out mastitis by OB. decreased milk production (breast feeding mother for 8 months, no history of mastitis). i did go to patient first on thursday where my rapid covid was negative, flu was negative, WBCs were not elevated (9). covid PCR pending.
Open in Wayback Machine
(If this is a foreign report without a description you will be able to read the description in the Wayback Machine on Medalerts if the report became public for the first time before November 18, 2022.)
|COVID19 (COVID19 (PFIZER-BIONTECH))||Unknown||COVID19||PFIZER\BIONTECH||Unknown||Unknown|
|LAB_DATA:||covid pcr pending rapid covid negative flu negative CBC sent, WBC 9|
|CUR_ILL:||i had fevers up to 100.5 after first dose of pfizer. this was my second dose.|
|PRIOR_VAX:||low grade temps headaches chills with first dose of pfizer|
|ALLERGIES:||truvada - hiv exposure no hiv infection|
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