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CDC systems have flagged a small number of rare adverse events after seasonal influenza vaccination in 2025, most notably Guillain–Barré syndrome (GBS) at an estimated excess risk of about one to two ...
Peer-reviewed, long-term (3–5+ year) studies specifically designed to follow people from COVID-19 vaccination through three to five or more years are limited in the public record; most large safety ef...
VAERS is a federal, passive early‑warning system co‑managed by the CDC and FDA that collects reports of health events after vaccination and is designed to detect unusual patterns rather than prove cau...
The evidence collected during and after large-scale COVID-19 vaccination campaigns shows different long-term safety signals for the adenovirus-vector Johnson & Johnson (J&J/Janssen) shot versus the mR...
VAERS is a passive, open-access early‑warning system that accepts reports from anyone and is intended to detect unusual patterns or “signals” but cannot by itself determine causation . By contrast, VS...
Independent analyses show two competing narratives: peer‑reviewed regulatory literature documents a rigorous U.S. vaccine approval and surveillance system that makes covert state “tampering” implausib...
VAERS is a passive public early-warning system co-managed by CDC and FDA that collects any reported adverse event following vaccination but is not designed to establish causality . CDC and FDA clinici...
For up‑to‑date safety data and adverse‑event reports on Pfizer’s COVID vaccine, the primary public sources are the CDC (including Vaccine Safety pages, VSD, v‑safe, and VAERS), the FDA (product labels...
VAERS is a national, passive "early warning" system co‑managed by CDC and FDA that accepts and analyzes reports of health events after vaccination; it helps detect unusual patterns or "signals" but ca...
VAERS is a federal, passive early-warning system co-managed by CDC and FDA that collects voluntary reports of health events after vaccination; it is useful for detecting signals but . Reports vary in ...
A small set of large, population‑level cohort studies and national register analyses have probed long‑term outcomes after routine childhood vaccination schedules, but the literature remains sparse and...
Estimates of Guillain‑Barré syndrome (GBS) risk after the Janssen (Johnson & Johnson) COVID‑19 vaccine cluster between roughly 5 and 20 additional cases per million doses depending on the data source ...
VAERS is a national, passive early‑warning database that collects reports of any health event after vaccination; the system explicitly states that its raw reports cannot by themselves establish causal...
Large-scale, long-term vaccine safety monitoring relies on multiple complementary systems — passive reporting (VAERS), active electronic-health-record and claims databases (VSD, FDA’s BEST/PRISM, CMS ...
Multiple peer‑reviewed studies and several meta‑analyses have directly examined mortality after COVID‑19 vaccination, generally finding no sustained increase in all‑cause or cardiac mortality and subs...
VAERS is a national, passive (spontaneous) reporting system that accepts reports from anyone and is intended to detect early safety “signals,” but its reports are unverified and cannot by themselves e...
The three documents provided contain no substantive data on neurological adverse events after COVID vaccination or after COVID infection for 2021–2024, so . Each source addresses unrelated technical t...
Health agencies monitor suspected vaccine-related brain tumor reports primarily through passive reporting systems like VAERS and active surveillance databases such as the Vaccine Safety Datalink (VSD)...
Postauthorization surveillance through VAERS, VSD and the EMA found that the Janssen (Johnson & Johnson) adenovirus vaccine and mRNA COVID-19 vaccines have identified and continually assessed through ...