Beautiful Virgin Islands

Thursday, Sep 18, 2025

Why are COVID vaccines linked to blood clots? Scientists have answers

Why are COVID vaccines linked to blood clots? Scientists have answers

A group of scientists in Germany claims they have cracked the code as to why AstraZeneca and Johnson & Johnson vaccines are causing blood clots.

Rare fatal blood clots linked to the COVID-19 vaccines AstraZeneca and Johnson & Johnson have caused major concerns, but a group of scientists in Germany claims they have cracked the code as to why this is happening.

The researchers suggest vaccines that put adenovirus vectors - the cold viruses used to insert the spike protein of COVID-19 into the nucleus of the cell - into the body can, in some people, cause bits of coronavirus proteins to enter the nucleus and break up.

The fragments then exit into the bloodstream and can cause clotting. The rare clumps in the blood can then become serious if the clots approach vital organs.

The scientists wrote in a pre-print study, which has not undergone peer review, that the vaccine is delivered to the nucleus of the cell rather than to the fluid around it that acts as a protein factory.

"The adenovirus life cycle includes the infection of cells … entry of the adenoviral DNA into the nucleus, and subsequently gene transcription by the host transcription machinery," the researchers said.

"And exactly here lies the problem: the viral piece of DNA … is not optimised to be transcribed inside of the nucleus".

The Pfizer/BioNTech and Moderna are mRNA vaccines that do not use this system and there have been no cases reported of blood clots with these doses.

But there is a way for the vaccine's manufacturers to eliminate the risks, the scientists claim.

Professor Rolf Marschalek, a professor at Goethe University in Frankfurt who was a part of the study, told the Financial Times the vaccines can be redesigned. He also told the newspaper Johnson & Johnson is in contact with him.

Why do the vaccines affect younger people?


The study suggests that elderly people use drugs that thin blood more often, or even on a daily basis, which could decrease the risk of blood clots.

The researchers also suggested older immune systems display more immune senescence -the progressive decline in immune function with increasing age - which means young peple exhibit stronger immune reactions than elderly people, and women even stronger than men.

A health worker prepares a dose of the AstraZeneca/Oxford vaccine at a coronavirus vaccination centre at the Wanda Metropolitano stadium in Madrid


"All this would imply a higher incidence in young women when compared to men or elderly people," the study said.

The Oxford-AstraZeneca and Johnson & Johnson jabs in particular have been linked to rare deadly blood clotting disorders, especially for women under the age of 60.

What are the vaccine rules in Europe?


The European Medicines Agency (EMA) said in April there was a "possible link" between the AstraZeneca vaccine and "very rare cases of unusual blood clots with low blood platelets".

The agency said it received reports of 169 cases of the rare brain blood clot by early April, after 34 million doses had been administered in the European Economic Area (EEA).

But the EMA stresses the benefits of being vaccinated against COVID-19 outweigh the risks of developing blood clots.

Meanwhile, the United Kingdom has reported 309 clots and 56 deaths out of the 33 million vaccines administered with AstraZeneca. And the Johnson & Johnson vaccine has been linked to 28 cases of blood clots in the United States.

As a consequence, some European countries temporarily halted these vaccines but have now set age limits. However, they have failed to reach a consensus on a common approach to administering them.

In Italy, it is recommended the AstraZeneca vaccine is administered to those over the age of 60, for France over the age of 55 and the UK advises it is not used on those under the age of 30.

Newsletter

Related Articles

Beautiful Virgin Islands
0:00
0:00
Close
Macron and his wife to provide 'scientific photographic evidence' that she is a real woman
US Tech Giants Pledge Billions to UK AI Infrastructure Following Starmer's Call
Saudi Arabia cracks down on music ‘lounges’ after conservative backlash
DeepMind and OpenAI Achieve Gold at ‘Coding Olympics’ in AI Milestone
SEC Allows Public Companies to Block Investors from Class-Action Lawsuits
Saudi Arabia Signs ‘Strategic Mutual Defence’ Pact with Pakistan, Marking First Arab State to Gain Indirect Access to Nuclear Strike Capabilities in the Region
Federal Reserve Cuts Rates by Quarter Point and Signals More to Come
Effective and Impressive Generation Z Protest: Images from the Riots in Nepal
European manufacturers against ban on polluting cars: "The industry may collapse"
Sam Altman sells the 'Wedding Estate' in Hawaii for 49 million dollars
Trump: Cancel quarterly company reports and settle for reporting once every six months
Turkish car manufacturer Togg Enters German Market with 5-Star Electric Sedan and SUV to Challenge European EV Brands
US Launches New Pilot Program to Accelerate eVTOL Air Taxi Deployment
Christian Brueckner Released from German Prison after Serving Unrelated Sentence
World’s Longest Direct Flight China Eastern to Launch 29-Hour Shanghai–Buenos Aires Direct Flight via Auckland in December
New OpenAI Study Finds Majority of ChatGPT Use Is Personal, Not Professional
Hong Kong Industry Group Calls for HK$20 Billion Support Fund to Ease Property Market Stress
Joe Biden’s Post-Presidency Speaking Fees Face Weak Demand amid Corporate Reluctance
Charlie Kirk's murder will break the left's hateful cancel tactics
Kash Patel erupts at ‘buffoon’ Sen. Adam Schiff over Russiagate: ‘You are the biggest fraud’
Homeland Security says Emmy speech ‘fanning the flames of hatred’ after Einbinder’s ‘F— ICE’ remark
Charlie Kirk’s Alleged Assassin Tyler Robinson Faces Death Penalty as Charges Formally Announced
Actor, director, environmentalist Robert Redford dies at 89
The conservative right spreads westward: a huge achievement for 'Alternative for Germany' in local elections
JD Vance Says There Is “No Unity” with Those Who Celebrate Charlie Kirk’s Killing, and he is right!
Trump sues the 'New York Times' for an astronomical sum of 15 billion dollars
Florida Hospital Welcomes Its Largest-Ever Baby: Annan, Nearly Fourteen Pounds at Birth
U.S. and Britain Poised to Finalize Over $10 Billion in High-Tech, Nuclear and Defense Deals During Trump State Visit
China Finds Nvidia Violated Antitrust Laws in Mellanox Deal, Deepens Trade Tensions with US
US Air Force Begins Modifications on Qatar-Donated Jet Amid Plans to Use It as Air Force One
Pope Leo Warns of Societal Crisis Over Mega-CEO Pay, Citing Tesla’s Proposed Trillion-Dollar Package
Poland Green-Lights NATO Deployment in Response to Major Russian Drone Incursion
Elon Musk Retakes Lead as World’s Richest After Brief Ellison Surge
U.S. and China Agree on Framework to Shift TikTok to American Ownership
London Daily Podcast: London Massive Pro Democracy Rally, Musk Support, UK Economic Data and Premier League Results Mark Eventful Weekend
This Week in AI: Meta’s Superintelligence Push, xAI’s Ten Billion-Dollar Raise, Genesis AI’s Robotics Ambitions, Microsoft Restructuring, Amazon’s Million-Robot Milestone, and Google’s AlphaGenome Update
Le Pen Tightens the Pressure on Macron as France Edges Toward Political Breakdown
Musk calls for new UK government at huge pro-democracy rally in London, but Britons have been brainwashed to obey instead of fighting for their human rights
Elon Musk responds to post calling for the murder of Erika Kirk, widow of Charlie Kirk: 'Either we fight back or they will kill us'
Czech Republic signs €1.34 billion contract for Leopard 2A8 main battle tanks with delivery from 2028
USA: Office Depot Employees Refused to Print Poster in Memory of Charlie Kirk – and Were Fired
Proposed U.S. Bill Would Allow Civil Suits Against Judges Who Release Repeat Violent Offenders
Penske Media Sues Google Over “AI Overviews,” Claiming It Uses Journalism Without Consent and Destroys Traffic
Indian Student Engineers Propose “Project REBIRTH” to Protect Aircraft from Crashes Using AI, Airbags and Smart Materials
French Debt Downgrade Piles Pressure on Macron’s New Prime Minister
US and UK Near Tech, Nuclear and Whisky Deals Ahead of Trump Trip
One in Three Europeans Now Uses TikTok, According to the Chinese Tech Giant
Could AI Nursing Robots Help Healthcare Staffing Shortages?
NATO Deploys ‘Eastern Sentry’ After Russian Drones Violate Polish Airspace
Anesthesiologist Left Operation Mid-Surgery to Have Sex with Nurse
×