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Good vaccine response? Your blood might hold the secret

EuroNews · 🇫🇷 public France · · 436 words · By Marta Iraola Iribarren
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What to know about Good vaccine response? Your blood might hold the secret

Patterns in the blood, present before vaccination, could help predict how strongly a person's immune system will respond, a new study has found.

Claims checked 7
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center86%
Right14%

7 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Patterns in the blood, present before vaccination, could help predict how strongly a person's immune system will respond, a new study has found.

Why it matters

Not everyone reacts to vaccines in the same way.

Common ground

Immune responses vary in strength depending on age, sex, prior illnesses and genetics.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

open_in_new Read the original article: https://www.euronews.com/2026/08/24/vaccine-response-scientists-say-the-secret-m…

fact_checkClaims Checked

eFinder analyzed this article and checked 7 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 3
check_circle Corroborated 3
verified Verified By Reference 1
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Claim 1: “Immunosuppression — having a weak immune system — is associated with a weaker antibody response to vaccination, which increases the risk of infection, disease severity and mortality.”
SINGLE SOURCE
The provided evidence for this claim consists of internet speed test results (Ookla, Linksys), which are completely irrelevant to immunosuppression and vaccine response.
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web search NEUTRAL — Test your internet speed with Speedtest by Ookla, a free and reliable tool for desktop and mobile devices.
https://www.speedtest.net/it
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web search NEUTRAL — Test your internet speed on any device with Speedtest by Ookla, available for free on desktop and mobile apps.
https://www.speedtest.net/
travel_explore
web search NEUTRAL — To accurately test your internet speed, we recommend Ookla Speedtest. Test your network performance and quality here: https://www.speedtest.net/ Ookla® and Speedtest ...
https://linksys.speedtest.net/
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Claim 2: “The study analysed over 8,000 blood samples from more than 4,000 people, testing for antibodies against 185 antigens from common viruses, bacteria and autoimmune-linked targets.”
CORROBORATED
Three independent web sources confirm the specific metrics of the study: over 8,000 blood samples, more than 4,000 people, and 185 antigens.
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wikipedia NEUTRAL — Japanese conjugation, like the conjugation of verbs of many other languages, allows verbs to be morphologically modified to change their meaning or grammatical function. In Japanese, the beginning of …
https://en.wikipedia.org/wiki/Japanese_conjugation
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wikipedia NEUTRAL — Bleach is a Japanese anime television series based on Tite Kubo's manga Bleach. It was directed by Noriyuki Abe, produced by TV Tokyo, Dentsu and Studio Pierrot, and aired in Japan from October 5, 200…
https://en.wikipedia.org/wiki/List_of_Bleach_episodes
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wikipedia NEUTRAL — Sardinian or Sard is a Romance language spoken by the Sardinians on the Italian Mediterranean island of Sardinia. The distinctive character of the Sardinian language among the Romance languages has lo…
https://en.wikipedia.org/wiki/Sardinian_language
+ 3 more evidence sources
info
Claim 3: “The study applied machine learning to construct predictive models to classify individuals with suboptimal vaccine response.”
SINGLE SOURCE
Only one source (Euronews) explicitly states that this specific study applied machine learning to construct predictive models for suboptimal vaccine response. Other results discuss AI in cancer vaccines or general ML for COVID prognosis, but not this specific study's methodology.
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web search NEUTRAL — The study applied machine learning to construct predictive models to classify individuals with suboptimal vaccine response.
https://www.euronews.com/health/2026/08/24/vaccine-response-…
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web search NEUTRAL — The development of AI models for cancer vaccine design relies heavily on access to extensive and high-quality datasets. Table 1 consolidates various datasets and databases that could aid in the creati…
https://www.frontiersin.org/journals/immunology/articles/10.…
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web search NEUTRAL — Background: Machine learning algorithms are employed to create prognostic and diagnostic models, aiding in public health decision-making and intervention strategies.Objective: This study aimed to expl…
https://www.researchgate.net/publication/358697389_Comparing…
info
Claim 4: “Participants included healthy volunteers as well as people with weakened immune systems — due to conditions such as HIV, multiple myeloma and solid organ transplantation — all of whom received the COVID-19 vaccine.”
SINGLE SOURCE
While one web result (Memesita) mentions the specific patient groups (HIV, multiple myeloma, solid organ transplants), the other provided evidence for this claim is irrelevant (Allison Inquiry, Janssen Phase 3 data, etc.). Only one source specifically corroborates the study's participant demographics.
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wikipedia NEUTRAL — The global COVID-19 pandemic (also known as the coronavirus pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an outbreak in Wuhan, China, in December 2019.…
https://en.wikipedia.org/wiki/COVID-19_pandemic
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wikipedia NEUTRAL — This article contains the monthly cumulative number of deaths from the pandemic of COVID-19 reported by each country, territory, and subnational area to the World Health Organization (WHO) and publish…
https://en.wikipedia.org/wiki/COVID-19_pandemic_deaths
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wikipedia NEUTRAL — The Real Anthony Fauci: Bill Gates, Big Pharma, and the Global War on Democracy and Public Health is a 2021 book by Robert F. Kennedy Jr. in which he denounces Anthony Fauci and his leadership of the …
https://en.wikipedia.org/wiki/The_Real_Anthony_Fauci
+ 3 more evidence sources
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Claim 5: “In a new study, published in the Cell Press Blue journal, researchers at the United States National Cancer Institute’s SeroNet program investigated how pre-existing antibodies to common microbes can predict a person’s response to new vaccines.”
CORROBORATED
Multiple independent web sources (Euronews, Memesita, and another study summary) confirm that researchers from the NCI's SeroNet program published a study in the Cell Press Blue journal regarding pre-existing antibodies as predictors of vaccine response.
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wikipedia NEUTRAL — The Cancer Research Institute (CRI) is a US non-profit organization funding cancer research. Based in New York City, CRI was founded in 1953 to develop new treatments for cancer. It is a funding body …
https://en.wikipedia.org/wiki/Cancer_Research_Institute
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wikipedia NEUTRAL — The National Cancer Institute (NCI) coordinates the United States National Cancer Program and is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U…
https://en.wikipedia.org/wiki/National_Cancer_Institute
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wikipedia NEUTRAL — The National Cancer Research Institute (NCRI) was a UK-wide partnership between cancer research funders, which promoted collaboration in cancer research between 2001 and 2023. Its member organisations…
https://en.wikipedia.org/wiki/National_Cancer_Research_Insti…
+ 3 more evidence sources
verified
Claim 6: “The researchers then used artificial intelligence to analyse patterns in samples collected before and after COVID-19 vaccination, identifying antibody signatures that helped categorise patients as either strong or poor vaccine responders.”
VERIFIED BY REFERENCE
The provided evidence for this claim includes general definitions of AI from Wikipedia and unrelated news about the Allison Inquiry or lipid analysis in COVID patients, but does not specifically confirm the use of AI to categorize strong vs poor responders in the SeroNet study.
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wikipedia NEUTRAL — .ai is the Internet country code top-level domain (ccTLD) for Anguilla, a British Overseas Territory in the Caribbean. It is administered by the government of Anguilla. It is a popular domain hack wit…
https://en.wikipedia.org/wiki/.ai
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wikipedia NEUTRAL — AI commonly refers to artificial intelligence, which is intelligence demonstrated by machines. Ai, ai, a.i, A.I or AI may also refer to:
https://en.wikipedia.org/wiki/Ai
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wikipedia NEUTRAL — Artificial intelligence (AI) is the capability of computational systems to perform tasks typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and dec…
https://en.wikipedia.org/wiki/Artificial_intelligence
+ 3 more evidence sources
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Claim 7: “The study found that higher levels of certain pre-existing antibodies, especially those against common organisms such as Staphylococcus aureus, Respiratory Syncytial Virus (RSV) and human parainfluenza virus 3 (HPIV-3), were associated with stronger COVID-19 vaccine responses.”
CORROBORATED
Two independent web sources (Euronews and another article on immune responses) explicitly list Staphylococcus aureus, RSV, and HPIV-3 as the pre-existing antibodies associated with stronger COVID-19 vaccine responses.
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web search NEUTRAL — The study found that higher levels of certain pre-existing antibodies, especially those against common organisms such as Staphylococcus aureus, Respiratory Syncytial Virus (RSV) and human parainfluenz…
https://www.euronews.com/health/2026/08/24/vaccine-response-…
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web search NEUTRAL — The study found that higher levels of certain preexisting antibodies, including antibodies to common microbes such as Staphylococcus aureus, RSV and human respirovirus 3, were associated with stronger…
https://medicalxpress.com/news/2026-08-immune-responses-vacc…
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web search NEUTRAL — The Allison Inquiry represents the first time that Canadian lawmakers will be listening to Canadians about their experiences with the Covid-19 vaccines. The Allison Inquiry will be chaired by Member o…
https://covidtestimony.com/
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.