Marc Veldhoen
@marcveld.bsky.social
Professor of Immunology 🇳🇱 🇬🇧
Lisbon, 🇵🇹
#Immunology
Time for Science, not silence
https://scholar.google.co.uk/citations?user=7vG1jLIAAAAJ&hl=en
https://orcid.org/0000-0002-1478-9562
threads.net/@marc_veld
mastodon.online/@marc_veld
Lisbon, 🇵🇹
#Immunology
Time for Science, not silence
https://scholar.google.co.uk/citations?user=7vG1jLIAAAAJ&hl=en
https://orcid.org/0000-0002-1478-9562
threads.net/@marc_veld
mastodon.online/@marc_veld
Pinned
Marc Veldhoen
@marcveld.bsky.social
· Nov 29
What will population immunity to SARS-CoV-2 look like in a post-vaccine world?
An updated outlook (2025)
marcveldhoen.substack.com
Five years of COVID taught us one thing: immunology didn’t fail, our public discourse did. My new Substack cuts through the noise with evidence, not ideology. If you want facts over fear, and science over spin, join here:
marcveldhoen.substac...
1/2
marcveldhoen.substac...
1/2
Reposted by Marc Veldhoen
Persistent T cell activation and cytotoxicity against glioblastoma following single oncolytic virus treatment in a clinical trial
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
February 12, 2026 at 9:38 PM
Persistent T cell activation and cytotoxicity against glioblastoma following single oncolytic virus treatment in a clinical trial
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
Reposted by Marc Veldhoen
Can't they lie better? February 12th, 2026.....
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
February 12, 2026 at 6:57 PM
Can't they lie better? February 12th, 2026.....
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
Het steeds weglaten van context, het mis- en overinterpreteren van gegevens of grafieken is een constant verschijnsel. Vaak door degenen met de minste kennis. Context geven is schijnbaar
"zonder meer als waar aan nam en verdere research achterwege liet."
laf anoniempje
bsky.app/profile/marc...
"zonder meer als waar aan nam en verdere research achterwege liet."
laf anoniempje
bsky.app/profile/marc...
Dus beide grafieken hebben een waarde en laten verschillende dingen zien die belangrijk zijn voor het voeren van echt beleid.
Helaas worden ze misbruikt voor makkelijke slogans en valse ideeën. Dat brengt geheel geen vooruitgang en lost niets op.
6/6
Helaas worden ze misbruikt voor makkelijke slogans en valse ideeën. Dat brengt geheel geen vooruitgang en lost niets op.
6/6
February 12, 2026 at 11:31 PM
Het steeds weglaten van context, het mis- en overinterpreteren van gegevens of grafieken is een constant verschijnsel. Vaak door degenen met de minste kennis. Context geven is schijnbaar
"zonder meer als waar aan nam en verdere research achterwege liet."
laf anoniempje
bsky.app/profile/marc...
"zonder meer als waar aan nam en verdere research achterwege liet."
laf anoniempje
bsky.app/profile/marc...
Ach, kijk, do de mus is ook nog actief en kan het liegen en framen niet laten. Net als antivax en COVIDdoom zijn dit soort anonieme laffaards alleen ophef aan het schoppen. Lezen en begrijpen kunnen ze niet.
"Wees voorzichtig met grafieken; ze kunnen makkelijk lijken, maar zijn vaak complexer."
"Wees voorzichtig met grafieken; ze kunnen makkelijk lijken, maar zijn vaak complexer."
February 12, 2026 at 11:31 PM
Ach, kijk, do de mus is ook nog actief en kan het liegen en framen niet laten. Net als antivax en COVIDdoom zijn dit soort anonieme laffaards alleen ophef aan het schoppen. Lezen en begrijpen kunnen ze niet.
"Wees voorzichtig met grafieken; ze kunnen makkelijk lijken, maar zijn vaak complexer."
"Wees voorzichtig met grafieken; ze kunnen makkelijk lijken, maar zijn vaak complexer."
there is no long-term survival data. The mechanism of how the virus achieves this, likely multifactorial, remains poorly understood. But, it is promising data!
5/5
5/5
February 12, 2026 at 9:38 PM
there is no long-term survival data. The mechanism of how the virus achieves this, likely multifactorial, remains poorly understood. But, it is promising data!
5/5
5/5
It is a good clinical trial, using spacial profiling, obtaining functional data that correlate with clinical results. Very nicely is the activation of pre-existing anti-tumour T cells.
As often with GB studies, patient (16) number was low. The trial was not randomised, and
4/5
As often with GB studies, patient (16) number was low. The trial was not randomised, and
4/5
February 12, 2026 at 9:38 PM
It is a good clinical trial, using spacial profiling, obtaining functional data that correlate with clinical results. Very nicely is the activation of pre-existing anti-tumour T cells.
As often with GB studies, patient (16) number was low. The trial was not randomised, and
4/5
As often with GB studies, patient (16) number was low. The trial was not randomised, and
4/5
The activated T cells were found close to dying tumour cells, which correlated with longer progression-free survival in patients.
Viral remnants were found only in necrotic regions, while T cells penetrated live tumor regions, suggesting an ongoing immune response.
3/5
Viral remnants were found only in necrotic regions, while T cells penetrated live tumor regions, suggesting an ongoing immune response.
3/5
February 12, 2026 at 9:38 PM
The activated T cells were found close to dying tumour cells, which correlated with longer progression-free survival in patients.
Viral remnants were found only in necrotic regions, while T cells penetrated live tumor regions, suggesting an ongoing immune response.
3/5
Viral remnants were found only in necrotic regions, while T cells penetrated live tumor regions, suggesting an ongoing immune response.
3/5
A single injection of an oncolytic virus (rQNestin34.5v.2) into glioblastoma (GBM) tumors in a clinical trial led to:
- infiltration of cytotoxic T cells into tumor tissue long after treatment.
-expansion of existing tumor-infiltrating T cell clones locally within the tumour
2/5
- infiltration of cytotoxic T cells into tumor tissue long after treatment.
-expansion of existing tumor-infiltrating T cell clones locally within the tumour
2/5
February 12, 2026 at 9:38 PM
A single injection of an oncolytic virus (rQNestin34.5v.2) into glioblastoma (GBM) tumors in a clinical trial led to:
- infiltration of cytotoxic T cells into tumor tissue long after treatment.
-expansion of existing tumor-infiltrating T cell clones locally within the tumour
2/5
- infiltration of cytotoxic T cells into tumor tissue long after treatment.
-expansion of existing tumor-infiltrating T cell clones locally within the tumour
2/5
Persistent T cell activation and cytotoxicity against glioblastoma following single oncolytic virus treatment in a clinical trial
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
February 12, 2026 at 9:38 PM
Persistent T cell activation and cytotoxicity against glioblastoma following single oncolytic virus treatment in a clinical trial
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
Using a virus to cause danger signals in tumours to initiate a strong anti-tumour response.
www.cell.com/cell/ab...
1/5
US regulators will not review Moderna’s request to license a new, potentially more effective flu shot – even though the FDA previously gave the green light to the project – in a decision that could have implications for all new and updated vaccines in the US.
2/2
2/2
February 12, 2026 at 8:08 PM
US regulators will not review Moderna’s request to license a new, potentially more effective flu shot – even though the FDA previously gave the green light to the project – in a decision that could have implications for all new and updated vaccines in the US.
2/2
2/2
Freedom
Ideology over reality and science
FDA declines to review Moderna application for new flu vaccine
Moderna requests meeting to discuss refusal as decision could have implications for all new and updated vaccines
www.theguardian.com/...
1/2
Ideology over reality and science
FDA declines to review Moderna application for new flu vaccine
Moderna requests meeting to discuss refusal as decision could have implications for all new and updated vaccines
www.theguardian.com/...
1/2
FDA declines to review Moderna application for new flu vaccine
Moderna requests meeting to discuss refusal as decision could have implications for all new and updated vaccines
www.theguardian.com
February 12, 2026 at 8:08 PM
Freedom
Ideology over reality and science
FDA declines to review Moderna application for new flu vaccine
Moderna requests meeting to discuss refusal as decision could have implications for all new and updated vaccines
www.theguardian.com/...
1/2
Ideology over reality and science
FDA declines to review Moderna application for new flu vaccine
Moderna requests meeting to discuss refusal as decision could have implications for all new and updated vaccines
www.theguardian.com/...
1/2
"The samples were taken at international entry points from June through December 2022."
Yeah ...... during 2022.
Did they find SARS-COV-2? No, RNA fragments. Anyway ...... they lie as bad as anti-vaxxers.
2/2
Yeah ...... during 2022.
Did they find SARS-COV-2? No, RNA fragments. Anyway ...... they lie as bad as anti-vaxxers.
2/2
February 12, 2026 at 6:57 PM
"The samples were taken at international entry points from June through December 2022."
Yeah ...... during 2022.
Did they find SARS-COV-2? No, RNA fragments. Anyway ...... they lie as bad as anti-vaxxers.
2/2
Yeah ...... during 2022.
Did they find SARS-COV-2? No, RNA fragments. Anyway ...... they lie as bad as anti-vaxxers.
2/2
Can't they lie better? February 12th, 2026.....
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
February 12, 2026 at 6:57 PM
Can't they lie better? February 12th, 2026.....
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
Anyone smart would read past the scare highlight.
And they would find out .....
1/2
Reposted by Marc Veldhoen
If you don´t test, you can pretend it does not exist....
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
February 11, 2026 at 10:31 PM
If you don´t test, you can pretend it does not exist....
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
Freedom ...
NEW: “CBS Evening News” producer Alicia Hastey sends a bombshell farewell note:
Stories are “evaluated not just on their journalistic merit but on whether they conform to a shifting set of ideological expectations.”
Stories are “evaluated not just on their journalistic merit but on whether they conform to a shifting set of ideological expectations.”
February 12, 2026 at 1:27 PM
Freedom ...
Reposted by Marc Veldhoen
NBC news picture, perfectly showing the smug hautaine disdain of the US government towards the victims of Epstein. One for the history books
The victims raised their hand to show they had not been asked to meet with the DoJ.
The victims raised their hand to show they had not been asked to meet with the DoJ.
February 11, 2026 at 10:43 PM
NBC news picture, perfectly showing the smug hautaine disdain of the US government towards the victims of Epstein. One for the history books
The victims raised their hand to show they had not been asked to meet with the DoJ.
The victims raised their hand to show they had not been asked to meet with the DoJ.
Reposted by Marc Veldhoen
National Cancer Institute studying ivermectin’s ‘ability to kill cancer cells,’ alarming career scientists
The NCI director didn’t cite new evidence that prompted the agency to look into it
www.statnews.com/202...
1/4
The NCI director didn’t cite new evidence that prompted the agency to look into it
www.statnews.com/202...
1/4
National Cancer Institute studying ivermectin’s ‘ability to kill cancer cells,’ alarming career scientists
The National Cancer Institute is studying ivermectin as a potential cancer treatment, according to its top official, alarming career scientists.
www.statnews.com
February 11, 2026 at 8:01 AM
National Cancer Institute studying ivermectin’s ‘ability to kill cancer cells,’ alarming career scientists
The NCI director didn’t cite new evidence that prompted the agency to look into it
www.statnews.com/202...
1/4
The NCI director didn’t cite new evidence that prompted the agency to look into it
www.statnews.com/202...
1/4
Reposted by Marc Veldhoen
More of those Brexit benefits; isolated on the world trade stage.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
www.politico.eu
February 11, 2026 at 10:46 PM
More of those Brexit benefits; isolated on the world trade stage.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
More of those Brexit benefits; isolated on the world trade stage.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
www.politico.eu
February 11, 2026 at 10:46 PM
More of those Brexit benefits; isolated on the world trade stage.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
UK has two months to save its steel industry, says Tata exec
U.K. urged to follow the EU in imposing higher tariffs on imported products.
NBC news picture, perfectly showing the smug hautaine disdain of the US government towards the victims of Epstein. One for the history books
The victims raised their hand to show they had not been asked to meet with the DoJ.
The victims raised their hand to show they had not been asked to meet with the DoJ.
February 11, 2026 at 10:43 PM
NBC news picture, perfectly showing the smug hautaine disdain of the US government towards the victims of Epstein. One for the history books
The victims raised their hand to show they had not been asked to meet with the DoJ.
The victims raised their hand to show they had not been asked to meet with the DoJ.
If you don´t test, you can pretend it does not exist....
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
February 11, 2026 at 10:31 PM
If you don´t test, you can pretend it does not exist....
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
Gallup will no longer measure presidential approval after 88 years
Trump’s Gallup approval rating as of last December was among the lowest the organization had found since it began in the 1930s.
thehill.com/homenews...
Reposted by Marc Veldhoen
Jayapal asks Epstein survivors in hearing room to stand and raise hands if they still haven't been able to meet with Bondi's DOJ. Every single one of them doe. Jayapal then gives Bondi an opportunity to apologize. She responds by trying to attack Jayapal and Merrick Garland but doesn't apologize.
February 11, 2026 at 3:49 PM
Jayapal asks Epstein survivors in hearing room to stand and raise hands if they still haven't been able to meet with Bondi's DOJ. Every single one of them doe. Jayapal then gives Bondi an opportunity to apologize. She responds by trying to attack Jayapal and Merrick Garland but doesn't apologize.
Ah, ja. Dat is nog steeds NOVA. IGC is niet meer.
February 11, 2026 at 5:06 PM
Ah, ja. Dat is nog steeds NOVA. IGC is niet meer.
Ah, dat is nu GIMM!
February 11, 2026 at 5:00 PM
Ah, dat is nu GIMM!
other coronaviruses are at high levels as well, and these are the predominant respiratory viruses going around. It is the winter time, and we are at the hight of these (influenza, RSV, 229E/OC43/HKU1/NL63 resiratory viruses. Rhinovirus levels have dropped a lot.
3/3
3/3
February 11, 2026 at 3:16 PM
other coronaviruses are at high levels as well, and these are the predominant respiratory viruses going around. It is the winter time, and we are at the hight of these (influenza, RSV, 229E/OC43/HKU1/NL63 resiratory viruses. Rhinovirus levels have dropped a lot.
3/3
3/3