London Daily

Focus on the big picture.
Thursday, Jul 10, 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
Severe Heatwave Claims 2,300 Lives Across Europe
NVIDIA Achieves Historic Milestone as First Company Valued at $4 Trillion
Declining Beer Consumption Signals Cultural Shift in Germany
Linda Yaccarino Steps Down as CEO of X After Two Years
US Imposes New Tariffs on Brazilian Exports Amid Political Tensions
Azerbaijan and Armenia are on the brink of a historic peace deal.
Emails Leaked: How Passenger Luggage Became a Side Income for Airport Workers
Polish MEP: “Dear Leftists - China is laughing at you, Russia is laughing, India is laughing”
BRICS Expands Membership with Indonesia and Ten New Partner Countries
Weinstein Victim’s Lawyer Says MeToo Movement Still Strong
U.S. Enacts Sweeping Tax and Spending Legislation Amid Trade Policy Shifts
Football Mourns as Diogo Jota and Brother André Silva Laid to Rest in Portugal
Labour Expected to Withdraw Support for Special Needs Funding Model
Leaked Audio Reveals Tory Aide Defending DEI Record
Elon Musk Founds a Party Following a Poll on X: "You Wanted It – You Got It!"
London Stock Exchange Faces Historic Low in Initial Public Offerings
A new online platform has emerged in the United Kingdom, specifically targeting Muslim men seeking virgin brides
Trump Celebrates Independence Day with B-2 Flyover and Signs Controversial Legislation
Boris Johnson Urges Conservatives to Ignore Farage
SNP Ordered to Update Single-Sex Space Guidance Within Days
Starmer Set to Reject Calls for Wealth Taxes
Stolen Century-Old Rolls-Royce Recovered After Hotel Theft
Macron Presses Starmer to Recognise Palestinian State
Labour Delayed Palestine Action Ban Over Riot Concerns
Swinney’s Tax Comments ‘Offensive to Scots’, Say Tories
High Street Retailers to Enforce Bans on Serial Shoplifters
Music Banned by Henry VIII to Be Performed After 500 Years
Steve Coogan Says Working Class Is Being ‘Ethnically Cleansed’
Home Office Admits Uncertainty Over Visa Overstayer Numbers
JD Vance Questions Mandelson Over Reform Party’s Rising Popularity
Macron to Receive Windsor Carriage Ride in Royal Gesture
Labour Accused of ‘Hammering’ Scots During First Year in Power
BBC Head of Music Stood Down Amid Bob Vylan Controversy
Corbyn Eyes Hard-Left Challenge to Starmer’s Leadership
London Tube Trains Suspended After Major Fire Erupts Nearby
Richard Kemp: I Felt Safer in Israel Under Attack Than in the UK
Cyclist Says Police Cited Human Rights Act for Riding No-Handed
China’s Central Bank Consults European Peers on Low-Rate Strategies
AI Raises Alarms Over Long-Term Job Security
Saudi Arabia Maintains Ties with Iran Despite Israel Conflict
Musk Battles to Protect Tesla Amid Trump Policy Threats
Air France-KLM Acquires Majority Stake in Scandinavian Airlines
UK Educators Sound Alarm on Declining Child Literacy
Shein Fined €40 Million in France Over Misleading Discounts
Brazil’s Lula Visits Kirchner During Argentina House Arrest
Trump Scores Legislative Win as House Passes Tax Reform Bill
Keir Starmer Faces Criticism After Rocky First Year in Power
DJI Launches Heavy-Duty Coaxial Quadcopter with 80 kg Lift Capacity
U.S. Senate Approves Major Legislation Dubbed the 'Big Beautiful Bill'
Largest Healthcare Fraud Takedown in U.S. History Announced by DOJ
×