London Daily

Focus on the big picture.
Thursday, Oct 09, 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
France: Less Than a Month After His Appointment, the New French Prime Minister Resigns
Hungarian Prime Minister Viktor Orbán stated that Hungary will not adopt the euro because the European Union is falling apart.
Sarah Mullally Becomes First Woman Appointed Archbishop of Canterbury
Mayor in western Germany in intensive care after stabbing
Australian government pays Deloitte nearly half a million dollars for a report built on fabricated quotes, fake citations, and AI-generated nonsense.
US Prosecutors Gained Legal Approval to Hack Telegram Servers
Macron Faces Intensifying Pressure to Resign or Trigger New Elections Amid France’s Political Turmoil
Standard Chartered Names Roberto Hoornweg as Sole Head of Corporate & Investment Banking
UK Asylum Housing Firm Faces Backlash Over £187 Million Profits and Poor Living Conditions
UK Police Crack Major Gang in Smuggling of up to 40,000 Stolen Phones to China
BYD’s UK Sales Soar Nearly Nine-Fold, Making Britain Its Biggest Market Outside China
Trump Proposes Farm Bailout from Tariff Revenues Amid Backlash from Other Industries
FIFA Accuses Malaysia of Forging Citizenship Documents, Suspends Seven Footballers
Latvia to Bar Tourist and Occasional Buses to Russia and Belarus Until 2026
A Dollar Coin Featuring Trump’s Portrait Expected to Be Issued Next Year
Australia Orders X to Block Murder Videos, Citing Online Safety and Public Exposure
Three Scientists Awarded Nobel Prize in Medicine for Discovery of Immune Self-Tolerance Mechanism
OpenAI and AMD Forge Landmark AI-Chip Alliance with Equity Option
Munich Airport Reopens After Second Drone Shutdown
France Names New Government Amid Political Crisis
Trump Stands Firm in Shutdown Showdown and Declares War on Drug Cartels — Turning Crisis into Opportunity
Surge of U.S. Billionaires Transforms London’s Peninsula Apartments into Ultra-Luxury Stronghold
Pro Europe and Anti-War Babiš Poised to Return to Power After Czech Parliamentary Vote
Jeff Bezos Calls AI Surge a ‘Good’ Bubble, Urges Focus on Lasting Innovation
Japan’s Ruling Party Chooses Sanae Takaichi, Clearing Path to First Female Prime Minister
Sean ‘Diddy’ Combs Sentenced to Fifty Months in Prison Following Prostitution Conviction
Taylor Swift’s ‘Showgirl’ Launch Extends Billion-Dollar Empire
Trump Administration Launches “TrumpRx” Plan to Enable Direct Drug Sales at Deep Discounts
Trump Announces Intention to Impose 100 Percent Tariff on Foreign-Made Films
Altman Says GPT-5 Already Outpaces Him, Warns AI Could Automate 40% of Work
Singapore and Hong Kong Vie to Dominate Asia’s Rising Gold Trade
Trump Organization Teams with Saudi Developer on $1 Billion Trump Plaza in Jeddah
Manhattan Sees Surge in Office-to-Housing Conversions, Highest Since 2008
Switzerland and U.S. Issue Joint Assurance Against Currency Manipulation
Electronic Arts to Be Taken Private in Historic $55 Billion Buyout
Thomas Jacob Sanford Named as Suspect in Deadly Michigan Church Shooting and Arson
Russian Research Vessel 'Yantar' Tracked Mapping Europe’s Subsea Cables, Raising Security Alarms
New York Man Arrested After On-Air Confession to 2017 Parents’ Murders
U.S. Defense Chief Orders Sudden Summit of Hundreds of Generals and Admirals
Global Cruise Industry Posts Dramatic Comeback with 34.6 Million Passengers in 2024
Trump Claims FBI Planted 274 Agents at Capitol Riot, Citing Unverified Reports
India: Internet Suspended in Bareilly Amid Communal Clashes Between Muslims and Hindus
Supreme Court Extends Freeze on Nearly $5 Billion in U.S. Foreign Aid at Trump’s Request
Archaeologists Recover Statues and Temples from 2,000-Year-Old Sunken City off Alexandria
China Deploys 2,000 Workers to Spain to Build Major EV Battery Factory, Raising European Dependence
Speed Takes Over: How Drive-Through Coffee Chains Are Rewriting U.S. Coffee Culture
U.S. Demands Brussels Scrutinize Digital Rules to Prevent Bias Against American Tech
Ringo Starr Champions Enduring Beatles Legacy While Debuting Las Vegas Art Show
Private Equity’s Fundraising Surge Triggers Concern of European Market Shake-Out
Colombian President Petro Vows to Mobilize Volunteers for Gaza and Joins List of Fighters
×