Index/Organizations/Pfizer

Pfizer

American multinational pharmaceutical and biotechnology corporation

Fact-Checks

290 results
Dec 16, 2025
Most Viewed

Did Michael Yeadon release Pfizer statement

Michael Yeadon is a former Pfizer vice‑president and chief scientist for a respiratory/allergy research unit who has repeatedly made public statements opposing COVID‑19 restrictions and questioning va...

Dec 2, 2025
Most Viewed

Did Trump ever claim to reduce drug prices by 500% and in what context?

President Trump publicly claimed extraordinarily large drug-price reductions — citing figures like “500%, 600%, 1,000%, 1,500%” — during July and August 2025 remarks and in subsequent events; fact‑che...

Nov 23, 2025
Most Viewed

Which national grocery chains have publicly endorsed or donated to Donald Trump or his campaigns?

Corporate “donations” to Donald Trump’s campaigns or inaugural committee are often individual, PAC, or affiliate contributions rather than direct corporate gifts; reporting shows major national brands...

Dec 17, 2025

How long does protection from Prevnar 20 last and is a booster recommended?

Available regulatory and manufacturer materials describe Prevnar 20 (PCV20) as a single-dose adult vaccine that provides "lasting protection" against 20 pneumococcal serotypes and is recommended by AC...

Nov 1, 2025

How many people died from Covid vaccine

Reported tallies of "deaths from COVID vaccine" vary widely because they mix raw, unverified reports with adjudicated findings; passive surveillance systems like VAERS show tens of thousands of report...

Dec 17, 2025

Where can I find Pfizer vaccine lot number lookup tools or databases online?

Public, consumer-facing lot‑number lookup tools exist for some COVID‑19 vaccines (for example Moderna’s Vial Lookup and manufacturer/Janssen checkers), but Pfizer (Comirnaty/BNT162b2) does not maintai...

Dec 6, 2025

How do long-term side effects of the J&J vaccine compare with mRNA COVID-19 vaccines?

Large surveillance studies and safety summaries show different rare long‑term risks for the Janssen (J&J) adenovirus vaccine versus mRNA vaccines: J&J has been associated with rare thrombosis with thr...

Nov 12, 2025

How do Pfizer and Moderna vaccine side effects compare to other COVID vaccines?

Pfizer and Moderna mRNA vaccines produce (injection-site pain, fatigue, headache, fever) that are generally mild and resolve in days, with likely due to a higher mRNA dose . Rare serious events differ...

Nov 14, 2025

What are the most reported side effects of Pfizer COVID vaccine?

Clinical-trial and public-health reporting consistently list local pain at the injection site, fatigue, headache, muscle aches and chills as the most commonly reported side effects after Pfizer’s COVI...

Nov 9, 2025

Do vaccine manufacturers make profit from them

Vaccine manufacturers do make from vaccines, but the scale and context vary by company, product, and time period; COVID‑19 vaccines produced especially large revenues and profits for major firms durin...

Oct 25, 2025

What are the most common long-term side effects of the Pfizer Covid vaccine?

The assembled evidence identifies as the most consistently observed rare long-term adverse events associated with the Pfizer-BioNTech BNT162b2 vaccine, particularly after mRNA dosing in younger age gr...

Nov 9, 2025

How do long-term side effects of Janssen vaccine compare to Pfizer and Moderna COVID vaccines?

Clinical surveillance through 2022–2025 finds , with Janssen linked more to thrombosis with thrombocytopenia syndrome (TTS) and Guillain-Barré syndrome (GBS), and mRNA vaccines showing higher signals ...

Dec 17, 2025

What claims has michael yeadon made regarding pfizer and were they verified by fact-checkers?

Michael (Mike) Yeadon, a former Pfizer allergy and respiratory research vice president who left the company in 2011, has made repeated claims about Pfizer, COVID-19 vaccines, fertility, children’s saf...

Jan 22, 2026

What are the actual ingredients in COVID-19 vaccines according to CDC?

directs readers to each ’s fact sheet or package insert for the definitive list of ingredients and notes that those documents contain the full ingredient disclosures . Public summaries compiled by sta...

Dec 5, 2025

What are the documented side effects of 2024-2025 updated COVID vaccines in clinical trials?

Clinical-trial and post‑authorization reports for the 2024–2025 updated COVID vaccines show predictable, mostly short‑lived reactions — injection‑site pain/tenderness, fatigue, muscle aches, fever, he...

Dec 11, 2025

Did Trump take $100,000,000 from big pharma

Available reporting shows large pharmaceutical companies and the industry trade group PhRMA gave sizable donations to Donald Trump’s 2025 inauguration committee — filings and press reports cite indivi...

Oct 21, 2025

dr david e martin

Dr. David E. Martin is presented in the provided materials as a researcher who links historical coronavirus cultivation, patents, and pandemic-era policy decisions to suspicions about COVID-19 origins...

Dec 9, 2025

Which us senators received the most pharma donations in 2024 and how much did each get?

OpenSecrets and related reporting show that pharmaceutical/health‑product PACs spent about $16.05 million on federal candidates in the 2024 cycle . Multiple outlets compiling OpenSecrets data list top...

Dec 21, 2025

Did pfizer respond publicly to any statements made by michael yeadon?

Available reporting shows no record of Pfizer issuing a public rebuttal to Michael Yeadon’s high‑profile claims; when asked about Yeadon’s assertions, a Pfizer spokesman declined to comment, and news ...

Nov 5, 2025

Is it true that some Pfizer covid shots were saline?

Isolated incidents occurred where people were injected with saline or diluent instead of a COVID-19 vaccine, typically because of preparation or handling errors at specific clinics or pharmacies. Ther...