Budapest Post

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

COVID-19 Infection Gives Some Immunity, But Virus Can Still Be Spread, Study Finds

COVID-19 Infection Gives Some Immunity, But Virus Can Still Be Spread, Study Finds

But experts cautioned that the findings mean people who contracted the disease in the first wave of the pandemic in the early months of 2020 may now be vulnerable to catching it again.

People who have had COVID-19 are highly likely to have immunity to it for at least five months, but there is evidence that those with antibodies may still be able to carry and spread the virus, a study of British healthcare workers has found.

Preliminary findings by scientists at Public Health England (PHE) showed that reinfections in people who have COVID-19 antibodies from a past infection are rare - with only 44 cases found among 6,614 previously infected people in the study.

But experts cautioned that the findings mean people who contracted the disease in the first wave of the pandemic in the early months of 2020 may now be vulnerable to catching it again.

They also warned that people with so-called natural immunity - acquired through having had the infection - may still be able carry the SARS-CoV-2 coronavirus in their nose and throat and could unwittingly pass it on.

"We now know that most of those who have had the virus, and developed antibodies, are protected from reinfection, but this is not total and we do not yet know how long protection lasts," said Susan Hopkins, senior medical adviser at PHE and co-leader of the study, whose findings were published on Thursday.

"This means even if you believe you already had the disease and are protected, you can be reassured it is highly unlikely you will develop severe infections. But there is still a risk you could acquire an infection and transmit (it) to others."

Major Implications


Experts not directly involved in the research, which is known as the SIREN study, urged people to note its key findings.

"These data reinforce the message that, for the time being, everyone is a potential source of infection for others and should behave accordingly," said Eleanor Riley, a professor of immunology and infectious disease at Edinburgh University.

Simon Clarke, an associate professor in cellular microbiology at Reading University, said the study "has major implications for how we can get out of the current crisis".

"This means that the vast majority of the population will either need to have natural immunity or have been immunised for us to fully lift restrictions on our lives, unless we are prepared to see many more people being infected and dying from COVID-19," he said.

PHE said in a statement that the study had not been able to explore antibody or other immune responses to the COVID-19 vaccines being rolled out in Britain. Vaccine effects would be studied as part of SIREN later this year, it said.

The SIREN study involves tens of thousands of healthcare workers in Britain who have been tested regularly since June for new COVID-19 infections as well as for the presence of antibodies.

Between June 18 and Nov. 24, scientists found 44 potential reinfections - two "probable" and 42 "possible" - among 6,614 participants who had tested positive for antibodies. This represents an 83% rate of protection from reinfection, they said.

The researchers said they would continue to follow the participants to see if this natural immunity might last longer than five months in some. But they said early evidence from the next stage of the study suggested some people with immunity could still carry high levels of virus.

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
×