Beautiful Virgin Islands

Monday, Aug 04, 2025

A third suffer covid vaccine side effects, study finds

A third suffer covid vaccine side effects, study finds

A new study suggests more than a third of people who receive their first dose of the coronavirus vaccine report some side effects - and a more frequent reaction in people who have had Covid "could be good news".

Most of the side effects with the first dose were mild, and included pain or swelling around the site of the injection.

The data from the study suggests people who have previously had Covid-19 are almost twice as likely to experience one or more mild whole body (systemic) side effects, compared to those who have not had the virus (33% vs 19%) from a Pfizer/BioNTech vaccine dose.

According to the latest data from the Zoe Covid Symptom Study app, the most common mild whole body (systemic) side effects were fatigue (9%), headache (8%) and chills or shivers (4%).

Tim Spector, lead scientist on the study and professor of genetic epidemiology at King’s College London, said: "This data set is a unique look at those who have been vaccinated in the real world outside trials, and so far the post-vaccine effects we see are mild and in the minority of people.

"It’s interesting to see that those with previous Covid are more likely to experience these mild after effects than naive subjects.

“This could be good news, as a larger response like this suggests that those getting a first dose after having had Covid are generating a stronger immune reaction and may get greater protection from just a single shot of the vaccine.”

Most mild whole body (systemic) side effects appeared in the first two days after the vaccination and only 3% of people have any after effects beyond three days.

The figures, based on a sub-sample of almost 40,000 vaccine doses, suggest that 37% of people experienced some local side effects after the first dose, and 45% after the second.

While 14% of people reported at least one whole body side effect within seven days from the first dose compared to 22% from the second dose, possibly indicating a stronger immune response after the second dose.

The data found that 13% of vaccinated men, and 19% of vaccinated women, reported at least one systemic side effect within seven days.

Under 55s were more likely to experience whole body side effects than those over 55s (21% vs 14%).

Covid-19 vaccines work by using a harmless version or component of the coronavirus to train the immune system, so when the virus is encountered the body is able to fight it off.

This response can feel like some of the symptoms when the body is fighting off a real infection, including headaches, fever, chills or shivers, tiredness (fatigue), muscle or joint pains, diarrhoea and feeling sick (nausea).

Experts say a stronger response may indicate evidence of an increased immune response.

This current data is for the Pfizer/BioNTech vaccine and most of those analysed were healthcare workers.

Newsletter

Related Articles

Beautiful Virgin Islands
0:00
0:00
Close
OpenAI’s Bold Bet: Teaching AI to Think, Not Just Chat
Tesla Seeks Shareholder Approval for $29 Billion Compensation Package for Elon Musk
Nvidia is cutting prices on its RTX 50-series graphics cards after sales slowed and inventories piled up
Ghislaine Maxwell Transferred to Minimum-Security Prison Amid Ongoing DOJ Discussions
U.S. Tariffs Surge to Highest Levels in Nearly a Century Under Second Trump Term
Matt Taibbi Slams Media for Role in Russiagate Narrative
Pilots Call for Mental Health Support Without Stigma
All Five Trapped Miners Found Dead After El Teniente Mine Collapse
Ong Beng Seng Pleads Guilty in Corruption Case Linked to Former Singapore Transport Minister
BP’s Largest Oil and Gas Find in 25 Years Uncovered Offshore Brazil
Italy Fines Shein One Million Euros for Misleading Sustainability Claims
JPMorgan and Coinbase Unveil Partnership to Let Chase Cardholders Buy Crypto Directly
Declassified Annex Links Soros‑Affiliated Officials and Clinton Campaign to ‘Russiagate’ Narrative
UK's Online Safety Law: A Front for Censorship
Nationwide Protests Erupt in Brazil Demanding Presidential Resignation
Parents Abandon Child at Barcelona Airport Over Passport Issue
Mystery Surrounds Death of Brazilian Woman with iPhones Glued to Her Body
Bus Driver Discovers Toddler Hidden in Suitcase in New Zealand
Switzerland Celebrates 734 Years of Independence Amid Global Changes
U.S. Opens Official Investigation into Former Trump Prosecutor Jack Smith
Leaked audio of Canada's new PM Mark Carney admitting the truth about the Net Zero agenda: "We're gonna make a lot of money off of this."
China Enforces Comprehensive Ban on Cryptocurrency Activities
Absolutely 100% Realistic EVO Series Doll by EXDOLL (Chinese Company) used mainly for carnal purposes
World Economic Forum founder Klaus Schwab: "In this new world, we must accept... total transparency. You have to get used to it. You have to behave accordingly. But if you have nothing to hide, you shouldn't be afraid."
Meet Mufti Hamid Patel, head of Office for Standards in Education in Pakistan
George Soros tells the World Economic Forum: "President Trump is a con man and the ultimate narcissist, who wants the world to revolve around him."
Hamas are STARVING the hostages.
Decline in Tourism in Majorca Amidst Ongoing Anti-Tourism Protests
British Tourist Dies Following Hair Transplant in Turkey, Police Investigate
Poland Begins Excavation at Dziemiany After New Clue to World War II‑Era Nazi Treasure
WhatsApp Users Targeted in New Scam Involving Account Takeovers
Trump Threatens Canada with Tariffs Over Palestinian State Recognition
Trump Deploys Nuclear Submarines After Threats from Former Russian President Medvedev
Trump Sues Murdoch in “Heavyweight Bout”: Lawsuit Over Alleged Epstein Letter Sets Stage for Courtroom Showdown
Germany Enters Fiscal Crisis as Cabinet Approves €174 Billion in New Debt
Trump Administration Finalizes Broad Tariff Increases on Global Trade Partners
J.K. Rowling Limits Public Engagements Citing Safety Fears
JD.com Launches €2.2 Billion Bid for German Electronics Retailer Ceconomy
Azerbaijan Proceeds with Plan to Legalise Casinos on Artificial Islands
Former Judge Charged After Drunk Driving Crash Kills Comedian in Brazil
Jeff Bezos hasn’t paid a dollar in taxes for decades. He makes billions and pays $0 in taxes, LEGALLY
China Increases Use of Exit Bans Amid Rising U.S. Tensions
IMF Upgrades Global Growth Forecast as Weaker Dollar Supports Outlook
Procter & Gamble to Raise U.S. Prices to Offset One‑Billion‑Dollar Tariff Cost
House Republicans Move to Defund OECD Over Global Tax Dispute
Botswana Seeks Controlling Stake in De Beers as Anglo American Prepares Exit
Trump Administration Proposes Repeal of Obama‑Era Endangerment Finding, Dismantling Regulatory Basis for CO₂ Emissions Limits
France Opens Criminal Investigation into X Over Algorithm Manipulation Allegations
A family has been arrested in the UK for displaying the British flag
Mel Gibson refuses to work with Robert De Niro, saying, "Keep that woke clown away from me."
×