Budapest Post

Cum Deo pro Patria et Libertate
Budapest, Europe and world news

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.

AI Disclaimer: An advanced artificial intelligence (AI) system generated the content of this page on its own. This innovative technology conducts extensive research from a variety of reliable sources, performs rigorous fact-checking and verification, cleans up and balances biased or manipulated content, and presents a minimal factual summary that is just enough yet essential for you to function as an informed and educated citizen. Please keep in mind, however, that this system is an evolving technology, and as a result, the article may contain accidental inaccuracies or errors. We urge you to help us improve our site by reporting any inaccuracies you find using the "Contact Us" link at the bottom of this page. Your helpful feedback helps us improve our system and deliver more precise content. When you find an article of interest here, please look for the full and extensive coverage of this topic in traditional news sources, as they are written by professional journalists that we try to support, not replace. We appreciate your understanding and assistance.
Newsletter

Related Articles

0:00
0:00
Close
IMF Upgrades Global Growth Forecast as Weaker Dollar Supports Outlook
House Republicans Move to Defund OECD Over Global Tax Dispute
France Opens Criminal Investigation into X Over Algorithm Manipulation Allegations
Trump Steamrolls EU in Landmark Trade Win: US–EU Trade Deal Imposes 15% Tariff on European Imports
ChatGPT CEO Sam Altman says people share personal info with ChatGPT but don’t know chats can be used as court evidence in legal cases.
Intel Reports Revenue Beats but Sees 81% Rise in Losses
Politics is a good business: Barack Obama’s Reported Net Worth Growth, 1990–2025
UN's Top Court Declares Environmental Protection a Legal Obligation Under International Law
"Crazy Thing": OpenAI's Sam Altman Warns Of AI Voice Fraud Crisis In Banking
The Podcaster Who Accidentally Revealed He Earns Over $10 Million a Year
UK Government Considers Dropping Demand for Apple Encryption Backdoor
Japanese Man Discovers Family Connection Through DNA Testing After Decades of Separation
Russia Signals Openness to Ukraine Peace Talks Amid Escalating Drone Warfare
Switzerland Implements Ban on Mammography Screening
Pogacar Extends Dominance with Stage Fifteen Triumph at Tour de France
President Trump Diagnosed with Chronic Venous Insufficiency After Leg Swelling
CEO Resigns Amid Controversy Over Relationship with HR Executive
NVIDIA Achieves $4 Trillion Valuation Amid AI Demand
Tulsi Gabbard Unveils Evidence Alleging Political Manipulation of Intelligence During Trump Administration
Centrist Criticism of von der Leyen Resurfaces as she Survives EU Confidence Vote
Trump Announces Coca-Cola to Shift to Cane Sugar in U.S. Production
FIFA Pressured to Rethink World Cup Calendar Due to Climate Change
Zelensky Reshuffles Cabinet to Win Support at Home and in Washington
"Can You Hit Moscow?" Trump Asked Zelensky To Make Putin "Feel The Pain"
Church of England Removes 1991 Sexuality Guidelines from Clergy Selection
Superman Franchise Achieves Success with Latest Release
Hungary's Viktor Orban Rejects Agreements on Illegal Migration
Air India Pilot’s Mental Health Records Under Scrutiny
Jamie Dimon Warns Europe Is Losing Global Competitiveness and Flags Market Complacency
Moonshot AI Unveils Kimi K2: A New Open-Source AI Model
Martha Wells Says Humanity Still Far from True Artificial Intelligence
Nvidia Becomes World’s First Four‑Trillion‑Dollar Company Amid AI Boom
EU Delays Retaliatory Tariffs Amid New U.S. Threats on Imports
Trump Proposes Supplying Arms to Ukraine Through NATO Allies
US Opens First Rare Earth Mine in Over 70 Years in Wyoming
Bitcoin Reaches New Milestone of $116,000
Severe Heatwave Claims 2,300 Lives Across Europe
Declining Beer Consumption Signals Cultural Shift in Germany
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”
Western Europe Records Hottest June on Record
BRICS Expands Membership with Indonesia and Ten New Partner Countries
Elon Musk Founds a Party Following a Poll on X: "You Wanted It – You Got It!"
China’s Central Bank Consults European Peers on Low-Rate Strategies
France Requests Airlines to Cut Flights at Paris Airports Amid Planned Air Traffic Controller Strike
Poland Implements Border Checks Amid Growing Migration Tensions
Emirates Airline Expands Market Share with New $20 Million Campaign
Amazon Reaches Milestone with Deployment of One Millionth Robot
Yulia Putintseva Calls for Spectator Ejection at Wimbledon Over Safety Concerns
House Oversight Committee Subpoenas Former Jill Biden Aide Amid Investigation into Alleged Concealment of President Biden's Cognitive Health
×