Source: VAERS.HHS.GOV
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.
hivers on lower back to side and left leg; joint stiffness over entire body; This is a spontaneous report from a contactable pharmacist. A 54-year-old female patient received the first dose of BNT162B2 (Pfizer-BioNTech COVID-19 mRNA vaccine, Solution for injection; lot number: ett9899, expiration date: unknown), intramuscularly on the left arm on 17Dec2020 at 10:45 at a single dose for COVID-19 immunization administered at the hospital. Relevant medical history included hypertension, diabetes, tachycardia, diverticulitis, and known allergies to pimentos. Concomitant medications included metformin and metoprolol tartrate (LOPRESSOR). The patient previously took valaciclovir hydrochloride (VALTREX) and experienced allergies to it. The patient was not pregnant at the time of vaccination. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. Prior to vaccination, the patient was not diagnosed with COVID-19. Since the vaccination, the patient had not been tested for COVID-19. The patient experienced hivers on lower back to side and left leg and joint stiffness over entire body on an unspecified date in Dec2020 with hive improvement several days later. The patient received diphenhydramine (BENADRYL) and paracetamol (TYLENOL) orally from the emergency room as treatment for the events. The events resulted in doctor or other healthcare professional office/clinic visit and emergency room/department or urgent care. The events were assessed as non-serious. The patient recovered from the events "hivers on lower back to side and left leg and joint stiffness over entire body" on an unspecified date in Dec2020.
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| Name | Dose # | Type | Manufacturer | Lot | Route | Site |
|---|---|---|---|---|---|---|
| COVID19 (COVID19 (PFIZER-BIONTECH)) | 1 | COVID19 | PFIZER\BIONTECH | Ett9899 | OT | LA |
| RECVDATE: | 01-05-2021 | RPT_DATE: |
| CAGE_YR: | |
| CAGE_MO: | |
| DIED: | U |
| DATEDIED: | |
| L_THREAT: | U |
| ER_VISIT: | |
| HOSPITAL: | U |
| HOSPDAYS: | |
| X_STAY: | U |
| DISABLE: | U |
| RECOVD: | Y |
| LAB_DATA: | |
| V_ADMINBY: | PVT |
| OTHER_MEDS: | ; LOPRESSOR |
| CUR_ILL: | |
| HISTORY: | Medical History/Concurrent Conditions: Diabetes; Diverticulitis; Fruit allergy; Hypertension; Tachycardia |
| PRIOR_VAX: | |
| SPLTTYPE: | USPFIZER INC2020516495 |
| FORM_VERS: | |
| TODAYS_DATE: | 01-04-2021 |
| BIRTH_DEFECT: | U |
| OFC_VISIT: | Y |
| ER_ED_VISIT: | Y |
| ALLERGIES: | |
| V_FUNDBY: |
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OpenVAERS is a private organization that posts publicly available CDC/FDA data of injuries reported post-vaccination. Reports are not proof of causality.