London Daily

Focus on the big picture.
Saturday, May 31, 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.

Comments

Oh ya 4 year ago
Well lets first clear this up Pfizer jab is not a vaccine it is a medical experiment that has never been used on humans before to change your DNA. It is a mRNA experiment. I noticed that the article never mentioned how many have died after getting the jab. Something that you might want to look into

Newsletter

Related Articles

0:00
0:00
Close
Satirical Sketch Sparks Political Spouse Feud in South Korea
Indonesia Quarry Collapse Leaves Multiple Dead and Missing
South Korean Election Video Pulled Amid Misogyny Outcry
Asian Economies Shift Away from US Dollar Amid Trade Tensions
Netflix Investigates Allegations of On-Set Mistreatment in K-Drama Production
US Defence Chief Reaffirms Strong Ties with Singapore Amid Regional Tensions
Vietnam Faces Strategic Dilemma Over China's Mekong River Projects
Malaysia's First AI Preacher Sparks Debate on Islamic Principles
White House Press Secretary Criticizes Harvard Funding, Advocates for Vocational Training
France to Implement Nationwide Smoking Ban in Outdoor Spaces Frequented by Children
Meta and Anduril Collaborate on AI-Driven Military Augmented Reality Systems
Russia's Fossil Fuel Revenues Approach €900 Billion Since Ukraine Invasion
U.S. Justice Department Reduces American Bar Association's Role in Judicial Nominations
U.S. Department of Energy Unveils 'Doudna' Supercomputer to Advance AI Research
U.S. SEC Dismisses Lawsuit Against Binance Amid Regulatory Shift
Alcohol Industry Faces Increased Scrutiny Amid Health Concerns
Italy Faces Population Decline Amid Youth Emigration
U.S. Goods Imports Plunge Nearly 20% Amid Tariff Disruptions
OpenAI Faces Competition from Cheaper AI Rivals
Foreign Tax Provision in U.S. Budget Bill Alarms Investors
Trump Accuses China of Violating Trade Agreement
Gerry Adams Wins Libel Case Against BBC
Russia Accuses Serbia of Supplying Arms to Ukraine
EU Central Bank Pushes to Replace US Dollar with Euro as World’s Main Currency
Chinese Woman Dies After Being Forced to Visit Bank Despite Critical Illness
President Trump Grants Full Pardons to Reality TV Stars Todd and Julie Chrisley
Texas Enacts App Store Accountability Act Mandating Age Verification
U.S. Health Secretary Ends Select COVID-19 Vaccine Recommendations
Vatican Calls for Sustainable Tourism in 2025 Message
Trump Warns Putin Is 'Playing with Fire' Amid Escalating Ukraine Conflict
India and Pakistan Engage Trump-Linked Lobbyists to Influence U.S. Policy
U.S. Halts New Student Visa Interviews Amid Enhanced Security Measures
Trump Administration Cancels $100 Million in Federal Contracts with Harvard
SpaceX Starship Test Flight Ends in Failure, Mars Mission Timeline Uncertain
King Charles Affirms Canadian Sovereignty Amid U.S. Statehood Pressure
Trump Threatens 25% Tariff on iPhones Amid Dispute with Apple CEO
Putin's Helicopter Reportedly Targeted by Ukrainian Drones
Liverpool Car Ramming Incident Leaves Multiple Injured
Australia Faces Immigration Debate Following Labor Party Victory
Iranian Revolutionary Guard Founder Warns Against Trusting Regime in Nuclear Talks
Macron Dismisses Viral Video of Wife's Gesture as Playful Banter
Cleveland Clinic Study Questions Effectiveness of Recent Flu Vaccine
Netanyahu Accuses Starmer of Siding with Hamas
Junior Doctors Threaten Strike Over 4% Pay Offer
Labour MPs Urge Chancellor to Tax Wealthy Over Cutting Welfare
Publication of UK Child Poverty Strategy Delayed Until Autumn
France Detains UK Fishing Vessel Amid Post-Brexit Tensions
Calls Grow to Resume Syrian Asylum Claims in UK
Nigel Farage Pledges to Reinstate Winter Fuel Payments
Boris and Carrie Johnson Welcome Daughter Poppy
×