Index/Organizations/Pfizer–BioNTech COVID-19 vaccine

Pfizer–BioNTech COVID-19 vaccine

MRNA vaccine against COVID-19 from BioNTech in cooperation with Pfizer

Fact-Checks

16 results
Nov 11, 2025
Most Viewed

Do COVID-19 vaccines leave persistent spike protein in organs and tissues?

The available analyses collectively identify two core claims: , and . The strongest, repeated evidence for long-term tissue persistence ties to prior infection, while claims that vaccination routinely...

Dec 9, 2025
Most Viewed

What large-scale studies have tracked long-term safety of Pfizer and Moderna mRNA vaccines beyond five years?

No large-scale studies with more than five years of follow-up on the original Pfizer-BioNTech (Comirnaty/BNT162b2) or Moderna (Spikevax/mRNA-1273) mRNA COVID-19 vaccines are reported in the supplied s...

Oct 12, 2025
Most Viewed

Adverse effects of covid vaccine on women over 65

The evidence across the provided studies indicates , but research shows , and some statistical signals in elderly surveillance warranted further evaluation. The three analyses collectively report that...

Oct 23, 2025

Have there been any recalls or updates to mRNA vaccines due to health concerns after 2022?

Since 2022 there has been of authorized mRNA COVID-19 vaccines, but regulatory updates and market withdrawals of specific products have occurred in some jurisdictions and safety labeling has been revi...

Jan 19, 2026

How do bivalent and variant-adapted COVID-19 boosters differ in formulation and immune response?

Bivalent COVID-19 boosters combine mRNA or protein from two spike variants—typically the ancestral (Wuhan-like) strain plus an Omicron sublineage—to broaden antibody recognition compared with original...

Jan 8, 2026

List vaccines for which manufacturers have released full raw patient datasets for independent analysis

Only one COVID-19 vaccine manufacturer—Pfizer/BioNTech—has been documented in these sources as having released key subject‑level trial data and broader review documents to regulators and, under court ...

Jan 2, 2026

Can the Pfizer Covid vaccine cause any permanent neurological side effects?

The short answer: yes — in rare instances neurological conditions reported after the Pfizer–BioNTech COVID-19 vaccine have led to lasting deficits, but evidence shows such outcomes are uncommon and th...

Dec 21, 2025

How long can vaccine-derived spike protein be detected after mRNA vaccination?

Multiple peer‑reviewed and non‑peer sources report vaccine‑derived SARS‑CoV‑2 spike protein can be detected for periods ranging from days to many months after mRNA vaccination, with documented finding...

Nov 30, 2025

What are the functions of each ingredient in the Pfizer-BioNTech (Comirnaty) vaccine?

The publicly available materials in this search set do not list the vaccine ingredients of Comirnaty or explain the function of each excipient; package inserts and product information are mentioned as...

Nov 29, 2025

What mechanisms cause transient blood test abnormalities following COVID vaccination?

Clinical studies and case series report transient blood-test abnormalities after COVID-19 vaccination, most commonly thrombocytopenia/ITP, transient neutropenia and short-lived changes in coagulation ...

Nov 27, 2025

What are the rates of serious post-vaccine adverse events (myocarditis, VTE, Guillain-Barré) by age, sex, and comorbidity?

Available studies show myocarditis after mRNA COVID-19 vaccines is rare but concentrated in adolescent and young adult males (excess risk up to ~20 per 100,000 doses in some groups), venous thromboemb...

Nov 24, 2025

mRNA covid-19 vaccine causes batch in healthy adult male

Available reporting and studies in the provided materials do not support the claim that mRNA COVID-19 vaccines cause a widespread “batch” injury in healthy adult males; surveillance and regulatory sta...

Nov 13, 2025

COVID mRNA vaccine safety

The assembled analyses show a clear consensus: , with common short‑lived reactions and rare serious events such as myocarditis, pericarditis, and anaphylaxis. Postmarketing surveillance and regulatory...

Nov 8, 2025

Which Covid vaccine manufacturers have developed variant-specific booster shots?

Three manufacturers——have developed and announced variant‑specific COVID‑19 booster formulations in recent seasons, with regulatory actions and company releases spanning 2024–2025 and updates into 202...

Oct 29, 2025

What is the incidence of myocarditis after Pfizer Covid vaccination in different age groups?

The evidence converges that , with highest attributable risks after the second dose in adolescents and young adults. Systematic reviews and large cohort studies put peak estimates roughly between , wh...

Oct 15, 2025

Covid Vaccine deaths/side effects

The claim "Covid Vaccine deaths/side effects" compresses two different questions: whether COVID-19 vaccines cause increased mortality and how commonly and seriously they produce adverse events. The as...