CDC and FDA, public files via HHS
VAERS
Clinical use
Passive surveillance. Anyone may file — clinician, patient, manufacturer, or lawyer. Use the public files to notice an unexpected cluster of a symptom, a product, and an onset window. Say “reports,” not “cases.” The file holds coincidences, incomplete stories, stimulated reporting, and duplicates.
Does not support
Not a confirmed injury. Not proof of cause. Not an incidence. Do not divide a report count by a denominator this file does not contain, and do not put a VAERS total in a note as a risk.