London Daily

Focus on the big picture.
Thursday, Sep 18, 2025

‘Don’t drop your guard,’ UK experts warn, as study highlights pre-immunity window after receiving Covid-19 vaccine

‘Don’t drop your guard,’ UK experts warn, as study highlights pre-immunity window after receiving Covid-19 vaccine

A small number of hospitalised Covid-19 patients in the UK died from the virus weeks after vaccination, researchers have said, warning the public not to throw caution to the wind after getting the jab in case they become infected.
Scientists behind the research said on Friday that there was evidence of rare instances of inoculated people still developing severe Covid-19 symptoms.

Most of the small number of people in this situation were likely infected soon after they received the first dose of the vaccine, before the body had time to fully develop immunizing antibodies against the virus, the researchers said.

The study, published in a preprint journal on Friday without being peer-reviewed, used data from 52,000 hospitalised Covid-19 patients.

The cohort included 526 patients who had received a first dose of a vaccine made by AstraZeneca or Pfizer in the previous three weeks. Out of this group 113 people died, most of whom were elderly or clinically vulnerable.

The study’s co-author, Professor Calum Semple of the University of Liverpool, presented the findings on Friday, saying: “We’re not saying the vaccine doesn’t work. In fact, this is good real-world evidence of it working. But it also shows that the vaccine isn’t perfect.”

He said the cases of people being infected so soon after getting their jabs indicate that “people are letting their guard down because they’ve been vaccinated.”

On Friday, another UK study also suggested that vaccination alone does not determine a person’s resistance to Covid-19, and that although jabs do offer protection, they may not give full coverage against infection.

The research, published in the journal Science, found that people previously infected with Covid-19 who were injected with a single dose of the Pfizer vaccine showed a stronger immune response against virus variants.

Those who previously had mild or asymptomatic infection had “significantly enhanced protection” against the UK and South Africa variants, according to researchers from Imperial College London, Queen Mary University of London, and University College London.

In people without prior infection, the immune response was “less strong” after a first dose, potentially leaving them more susceptible to variants.

One of the study’s co-authors, Professor Rosemary Boyton of Imperial College, said the data showed that “natural infection alone” may not provide sufficient immunity against variants.

“People who have had their first dose of vaccine, and who have not previously been infected with SARS-CoV-2, are not fully protected against the circulating variants of concern,” she said in a statement.
Newsletter

Related Articles

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
×