London Daily

Focus on the big picture.
Tuesday, Sep 23, 2025

FDA investigating allergic reactions to Pfizer vaccine reported in multiple states

FDA investigating allergic reactions to Pfizer vaccine reported in multiple states

The Food and Drug Administration (FDA) is investigating allergic reactions to the Pfizer coronavirus vaccine that were reported in multiple states after it began to be administered this week.
Peter Marks, director of the FDA’s Center for Biologics Evaluation and Research, told reporters late Friday that the reactions had been reported in more than one state besides Alaska and that the FDA is probing five reactions.

“We are working hand in hand with the Centers for Disease Control and Prevention (CDC), and we’ve actually been working closely with our United Kingdom colleagues, who of course reported the allergic reaction. I think we’ll be looking at all the data we can from each of these reactions to sort out exactly what happened, and we’ll also be looking to try to understand which component of the vaccine might be helping to produce them,” Marks said.

“I think we have at this point the right ... mitigation strategy with the availability of treatment for a severe allergic reaction being at the ready, and we’ll continue to monitor it very closely,” he added.

Marks said the FDA was not certain what caused the reactions but indicated a chemical called polyethylene glycol, which is present in the vaccines produced by Pfizer and BioNTech as well as by Moderna “could be the culprit.” He added that the reaction some people have experienced could be more common than once thought.

“We’ll obviously be monitoring very closely what’s going on. We’re working very closely with the CDC on these, and there have been meetings between the CDC and FDA pretty much every day this week making sure we’re keeping very close track of what’s going on,” he said.

The reports of allergic reactions in Alaska follow two similar cases reported last week in Britain, the first nation to approve Pfizer’s vaccine.

The FDA’s current guidance says that most Americans with allergies should be cleared to take the vaccine but that people who’ve had severe reactions to other vaccines should not get vaccinated. It also said Friday that people with a history of severe allergic reactions to any components of the Moderna shot should avoid getting that vaccine.

“FDA takes very seriously the safety of the medical products that we authorize and approve, and certainly in a vaccine setting, it’s one of the reasons Dr. Marks and his team, in collaboration with the CDC, has set up a very robust surveillance system for assessing safety. One of the things that FDA does very well and uniquely is really getting to the bottom of events like allergic reactions so we can completely understand the circumstances and better inform the public and also our regulatory decisions,” said FDA Commissioner Stephen Hahn.
Newsletter

Related Articles

0:00
0:00
Close
Disney Reinstates ‘Jimmy Kimmel Live!’ after Six-Day Suspension over Charlie Kirk Comments
U.S. Prosecutors Move to Break Up Google’s Advertising Monopoly
Nvidia Pledges Up to $100 Billion Investment in OpenAI to Power Massive AI Data Center Build-Out
U.S. Signals ‘Large and Forceful’ Support for Argentina Amid Market Turmoil
Nvidia and Abu Dhabi’s TII Launch First AI-&-Robotics Lab in the Middle East
Vietnam Faces Up to $25 Billion Export Loss as U.S. Tariffs Bite
Europe Signals Stronger Support for Taiwan at Major Taipei Defence Show
Indonesia Court Upholds Military Law Amid Concerns Over Expanded Civilian Role
Larry Ellison, Michael Dell and Rupert Murdoch Join Trump-Backed Bid to Take Over TikTok
Trump and Musk Reunite Publicly for First Time Since Fallout at Kirk Memorial
Vietnam Closes 86 Million Untouched Bank Accounts Over Biometric ID Rules
Explosive Email Shows Sarah Ferguson Begged Forgiveness from Jeffrey Epstein After Taking His Money
Corrupt UK Politician Ed Davey Demands Elon Musk’s Arrest for Supporting Democracy
UK, Canada, and Australia Officially Recognise Palestine in Historic Shift
Alibaba Debuts Open-Source Deep Research Agent with Benchmarks Rivaling OpenAI
Marcos Faces Legacy-Defining Crisis as Flood Projects Scandal Sparks Massive Tide of Protests
China’s Micro-Drama Boom Turns Stalled Real Estate Projects into Lavish Film Sets
New Eye Drops Show Promise in Replacing Reading Glasses for Presbyopia
'Company Got 5,189 H-1B Visas, Then Laid Off 16,000 Americans': US Defends New $100,000 H-1B Visa Fee
Golf legend tells Omar she should be 'sent back to Somalia' after her Kirk comments
EU Set to Bar Big Tech from New Financial Data Access Scheme
China Bans Livestreaming and AI in Religion Amid Crackdown on Shaolin Temple Scandal
Documents Reveal Mandelson Failed to Declare Epstein-Funded Flights as MP in 2003
Dubai Property Boom Shows Strain as Flippers Get Buyer’s Remorse
Harris Memoir Sparks Backlash from Democrats for Blunt Critiques in ‘107 Days’
Germany Weighs Excluding France from Key European Fighter Jet Programme
Cyberattack Disrupts Check-in and Boarding Systems at Major European Airports
Japan’s ‘Death-Tainted’ Homes Gain Appeal as Prices Soar in Tokyo
Massive Attack Withdraws from Spotify Over Daniel Ek’s €600M Defence-AI Investment
Björn Borg Breaks Silence: Memoir Reveals Addiction, Shame and Cancer Battle
When Extremism Hijacks Idealism: How the Baader-Meinhof Gang Emerged and Fell
Top AI Researchers Are Heading Back to China as U.S. Struggles to Keep Pace
JWST Data Brings TRAPPIST-1e Closer to Earth-Like Habitability
Trump Orders Third Lethal Strike on Drug-Trafficking Vessel as U.S. Expands Maritime Counter-Narcotics Operations
Trump Orders $100,000 Fee on H-1B Visas and Launches ‘Gold Card’ Immigration Pathway
Why Google Search Is Fading and AI Is Taking Its Place
UAE-US Stargate Project Poised to Make Abu Dhabi a Global AI Powerhouse
Federal Judge Dismisses Trump’s Fifteen-Billion-Dollar Suit Against New York Times, Orders Refile
France’s Looming Budget Crisis and Political Fracture Raise Fears of Becoming Europe’s “Sick Man”
Three Russian MiG-31 Jets Breach Estonian Airspace in ‘Unprecedentedly Brazen’ NATO Incident
DeepSeek Claims R1 Model Trained for only $294,000, Sparking Global Debate Over China’s AI Capabilities
SoftBank Vision Fund to Cut Nearly Twenty Percent of Staff in Bold AI Strategy Shift
Intel’s Next-Gen Manufacturing Gets a Lifeline from Nvidia’s Strategic $5B Deal
Erika Kirk Elected CEO of Turning Point USA After Husband Charlie Kirk’s Assassination
Massive Strikes in France Pressure Macron and New PM on Austerity Proposals
Trump Seeks Supreme Court Permission to Remove Fed Governor Lisa Cook
Hillary Clinton’s Reckless Rhetoric Fuels Division After Charlie Kirk’s Assassination
NASDAQ Rises to Record as Intel Soars More Than 20%, Nvidia Gains 3%
Nvidia’s $5 Billion Bet on Intel Reshapes AI Hardware Landscape
Trump and Starmer Clash Over UK Recognition of Palestinian State Amid State Visit
×