Christophe Veltsos
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drinfosec.bsky.social
Christophe Veltsos
@drinfosec.bsky.social
8.6K followers 4.4K following 6.5K posts
University prof. on cyber risk & systemic risk | He/him | Posts/RTs lots on #Covid #LongCovid. Covid is significant systemic risk. #COVIDisAirborne #MaskUp #IAQ #AirQ
Posts Replies Media Videos
drinfosec.bsky.social
🎯🧵 by @mysteriousrona.bsky.social aka "SARS2 is a Biohazard":

"... the acute phase of Cov encourages its host to develop survivalship bias - simply because they weren't hospitalized or killed. This cognitive bias fuels callous actions, like..."

4-tweet 🧵
threadreaderapp.com/thread/19933...
In an overwhelming number of cases, the acute phase of Cov encourages its host to develop survivalship bias - simply because they weren't hospitalized or killed. This cognitive bias fuels callous actions, like forgoing respiratory pathogen mitigation practices. 🧵 (1/4)
November 26, 2025 at 2:36 AM
drinfosec.bsky.social
🎯from 👆

"COVID isn’t an information blackout. It’s a psychological one.

Accepting the truth forces people to confront their own behaviour, past choices & consequences of the “back to normal” fantasy they helped create.

Denial is easier. “No one told us” is their emotional escape hatch."
COVID isn’t an information blackout. It’s a psychological one. Accepting the truth forces people to confront their own behaviour, past choices & consequences of the “back to normal” fantasy they helped create. Denial is easier. “No one told us” is their emotional escape hatch. Full thread here: https://threadreaderapp.com/thread/1992977547039039991.html
November 25, 2025 at 2:55 PM
drinfosec.bsky.social
🎯🎯🧵by @jamesthrot.bsky.social on Twitter:

"Oh they know.

The reason any utter of the word “COVID” is met with awkward silence, abrupt subject changes, or mockery is no coincidence.

That’s what denial looks like when the stakes are too high for..."

Full 🧵
threadreaderapp.com/thread/19929...
Oh they know. The reason any utter of the word “COVID” is met with awkward silence, abrupt subject changes, or mockery is no coincidence. That’s what denial looks like when the stakes are too high for people to admit what they already sense. You’re letting them off too easily.
November 25, 2025 at 2:54 PM
drinfosec.bsky.social
🎯🧵by @dcrinyyc.bsky.social:

"In survival there is a concept that is commonly talked about that refers to a point past return. Where even though you may not perceive the depth of the danger you are in, it is actually your last change to meaningfully..."

6-tweet🧵
threadreaderapp.com/thread/19931...
In survival there is a concept that is commonly talked about that refers to a point past return. Where even though you may not perceive the depth of the danger you are in, it is actually your last change to meaningfully do something about it. This happens in all sorts of
November 25, 2025 at 2:52 PM
drinfosec.bsky.social
PMC COVlD Update, Week of Nov 24, 2025 by Prof @michael-hoerger.bsky.social:

"With CDC data operational again, the transmission map is back. The data are always a week old, so transmission is likely worse than depicted.

We estimate 1 in 116 people..."

Full 🧵
threadreaderapp.com/thread/19927...
PMC COVlD Update, Week of Nov 24, 2025 (U.S.) 🧵1/10 With CDC data operational again, the transmission map is back. The data are always a week old, so transmission is likely worse than depicted. We estimate 1 in 116 people actively infectious and 422,000 new daily infections.
November 24, 2025 at 2:39 AM
drinfosec.bsky.social
🚨🧵by @michaelryan756 on Twitter on the Covid & "Soylent Green"

"The World of Soylent Green Is Closer Than We Admit

There’s a moment in Soylent Green that never leaves you.
An old man — tired, gentle, defeated — walks willingly into a..."

Full 🧵
threadreaderapp.com/thread/19925...
The World of Soylent Green Is Closer Than We Admit There’s a moment in Soylent Green that never leaves you. An old man — tired, gentle, defeated — walks willingly into a euthanasia chamber. The lights dim, the music swells, and he’s given a “beautiful” ending that hides an unbearable truth: his society decided he was no longer worth the effort it would take to keep him alive. That is the heartbreak at the centre of the film. Not the twist. Not the dystopia. But the quiet acceptance that some lives matter less.
November 24, 2025 at 2:11 AM
drinfosec.bsky.social
From 👆

"‼️So, if I summarised correctly:
- Everyone who had COVID-19 tends to have some lasting reduction in brain blood flow (CBF), mainly in frontotemporal areas – even if they feel 100% recovered.
- In Post-COVID Condition (PCC) the decline is more pronounced in severity and more..."
‼️So, if I summarised correctly: - Everyone who had COVID-19 tends to have some lasting reduction in brain blood flow (CBF), mainly in frontotemporal areas – even if they feel 100% recovered. - In Post-COVID Condition (PCC) the decline is more pronounced in severity and more localised to right parieto-occipital regions, and this specific occipital reduction strongly tracks with fatigue.
November 23, 2025 at 3:58 AM
drinfosec.bsky.social
Latest 🚨🧵by Dr. @harryspoelstra.bsky.social on Covid's impact on the right-occipital areas, where visual information is processed!

SARS-CoV-2 "...causes persistent cerebral hypoperfusion (mainly frontotemporal) that can still be detected months later..."

Full🎯🧵:
threadreaderapp.com/thread/19921...
Fatigue in Post-COVID-Condition is accompanied by hypoperfusion of right-occipital areas 🔥A German eye-opener: COVID-19 itself leaves lasting brain blood-flow reduction, even after full recovery! ➡️“In PCC patients, fatigue was associated with reduced perfusion in right-sided occipital regions, suggesting a potential pathophysiological basis for this symptom.” ➡️“These findings may also provide an imaging biomarker to aid in the diagnosis of PCC”. ‼️But when we dig deeper:
November 23, 2025 at 3:56 AM
drinfosec.bsky.social
🎯shared by @kananaskinyeti.bsky.social on Twitter:

OP: x.com/kananaskinye...
4 panel comic. Four people standing wearing winter clothes A: I hate winter. I hate the cold. B: Ya. Let's declare it over. C: Ya, fuck winter. D: What? 2 ABC take off winter clothes A: We've moved on! B: Yay normalcy D: It's 40 below! C: Fear monger! A: Whoa, something is up. I'm shivering uncontrollably. B:Baffling. D: Hypothermia. C: You sound like you are in a cult. B: He's not moving. I think he died. Gee, what a tragedy. C: Ya, but did he die of the cold or from the cold? D: Of or from denial.
November 23, 2025 at 3:49 AM
drinfosec.bsky.social
🚨🚨🧵by @catinthehat.bsky.social on Twitter about the trends regarding % of adults in the US & UK who...

Full 🎯🧵 (10 tweets):
threadreaderapp.com/thread/19922...

#Covid #LongCovid #Workforce #Disability
Two countries. Two charts. A very similar (and concerning) trend. ………….. Can you think of anything that happened in 2020 which is still affecting huge swathes of people on an ongoing basis and which may help explain this worrying trend? /1
November 23, 2025 at 3:43 AM
drinfosec.bsky.social
This🧵by @1goodtern.bsky.social will have you 🤔 about this word: "enculturation"

"Because he is *enculturated*.
He is saturated in the culture.
Unable to see that he's in it.
Unable to see its flaws.
Unable to see its dangers."

37-tweet 🧵 (quick read though):
threadreaderapp.com/thread/19918...
I had a catch up with an old friend yesterday. He works on WHO programmes to reduce the global burden of long term illnesses. This is probably a more interesting thread than I thought it was going to be.
November 22, 2025 at 3:39 AM
drinfosec.bsky.social
🚨🧵by @1goodtern.bsky.social earlier today:

"For years, people who have been reading the science have been warning that covid infections cause immune system disruption.
Not in a mysterious hand-wavy way.
In a very specific, well-understood biological way..."

🧵
threadreaderapp.com/thread/19919...
"For years, people who have been reading the science have been warning that covid infections cause immune system disruption. Not in a mysterious hand-wavy way. In a very specific, well-understood biological way..."
November 22, 2025 at 3:35 AM
drinfosec.bsky.social
From top post 👆
Put together, this study provides strong evidence that SARS-CoV-2 is a true fetal pathogen. It doesn’t just cross into the fetus - it alters tissues, suppresses DNA repair, triggers inflammation, and targets organs essential for immunity and neurodevelopment.
November 22, 2025 at 3:31 AM
drinfosec.bsky.social
From top post 👆
The study found that 10% of all fetal samples were SARS-CoV-2 positive. In some fetuses, the virus appeared in multiple organs at once. 21 tissues carried a high viral load, and 10 showed active viral replication.
November 22, 2025 at 3:30 AM
drinfosec.bsky.social
🚨🚨🚨🧵 by @ZdenekVrozina about "Presence of SARS-CoV-2 in fetal organs via intraamniotic infection"

"And the message is straightforward.
Vertical transmission is real,
and the virus can reach multiple fetal organs - even early in pregnancy..."

Full 21-tweet 🧵
threadreaderapp.com/thread/19919...
This new Nature Communications study is the most comprehensive look we’ve ever had at SARS-CoV-2 inside the human fetus. And the message is straightforward. Vertical transmission is real, and the virus can reach multiple fetal organs - even early in pregnancy
November 22, 2025 at 3:28 AM
drinfosec.bsky.social
🚨🧵by @michaelryan756 on Twitter:

" Century Before Covid, One Doctor Did Everything Right. They Still Attacked Him.

Dr James Niven isn’t a household name — but he should be.

When the 1918 flu hit Manchester, he was the one man who refused to pretend"

threadreaderapp.com/thread/19920...
A Century Before Covid, One Doctor Did Everything Right. They Still Attacked Him. Dr James Niven isn’t a household name — but he should be. When the 1918 flu hit Manchester, he was the one man who refused to pretend it would “blow over.” While others downplayed the danger, Niven rang every alarm he could. He shut schools, warned factories, pushed masks and ventilation, and begged the public to help protect each other.
November 22, 2025 at 3:23 AM
drinfosec.bsky.social
From @breathesafeair.bsky.social on Twitter:

"Newly updated: My favourite carbon dioxide monitors for all price ranges"

Link to the freshly updated line-up:
breathesafeair.com/carbon-dioxi...

#CO2 #CO2monitor #IAQ #CleanAir #IndoorAirQuality
"Newly updated: My favourite carbon dioxide monitors for all price ranges." https://breathesafeair.com/carbon-dioxide-monitors/
November 21, 2025 at 11:23 PM
drinfosec.bsky.social
Another great document from the BOHS worth saving, bookmarking, and sharing:

Image from p12 of the doc linked👇
Partial screenshot of the top of p12 of the PDF (link to PDF at the end of this ALT text): British Occupational Hygiene Society Type IIR Surgical Mask (FRSM) Filtering Face Piece Respirator 3 (FFP3) Breathing function tested Exhalation Inhalation and exhalation Size of particle(s) tested 3 microns, containing Staphylococcus aureus (average size 0.6-0.8 microns) Sodium Chloride aerosol with Mass Median Aerodynamic Diameter (MMAD) between 0,06 µm and 0,10 µm with a geometric standard deviation between 2,0 and 3,0' Splash test Impermeability of material when subjected to jet of synthetic blood at >120mmHg N/A Pressure differential (breathing resistance) 8l/min over a 4.9cm² material section Inhalation: 1 mbar at 30 l/min and 3 mbar at 95 l/min Exhalation: 3 mbar at 160 l/min Over entire mask Face Seal required Not designed to seal tightly to the face Designed to seal tightly to the face (individual face seal as determined during a Fit Test) https://www.bohs.org/app/uploads/2025/07/COSHH-and-Healthcare-Respiratory-Protection.pdf
November 21, 2025 at 7:18 PM
drinfosec.bsky.social
🚨🎯 press release from the British Occupational Hygiene Society (BOHS) regarding the UK Covid inquiry report:

"Lady Hallett Shouldn’t Hold Her Breath, says Health Campaign Group (Nov 21, 2025)
The leaders of the COVID Airborne Transmission Alliance (CATA) are..."

www.bohs.org/media-resour...
Lady Hallett Shouldn’t Hold Her Breath, says Health Campaign Group November 21, 2025 The leaders of the COVID Airborne Transmission Alliance (CATA) are advising Baroness Hallett not to hold her breath while waiting for implementation of recommendations in the long-awaited Module 2 report of the long-running COVID-19 Inquiry. The group, formed to represent tens of thousands of healthcare professional and employee bodies, was a core participant for Module 3. It continues to highlight the UK’s failure to protect healthcare workers from life-changing respiratory diseases. “The country has invested millions of pounds into the Inquiry and a huge amount of faith
November 21, 2025 at 7:10 PM
drinfosec.bsky.social
🚨🧵 by Vipin M. Vashishtha aka @vipintukur about the 8 different trajectories of LongCovid...

"The researchers identified 8 different longCOVID trajectories. Some of these trajectories included persistently severe symptoms..."

Full 🧵
threadreaderapp.com/thread/19913...
#LongCOVID can take eight different trajectories: ➡️ The researchers identified 8 different longCOVID trajectories. Some of these trajectories included persistently severe symptoms, intermittently severe symptoms, gradually improving symptoms, gradually worsening symptoms, and mild symptoms that only appeared after 15 months. 1/
November 21, 2025 at 6:55 PM
drinfosec.bsky.social
Great reminder shared by Dame Sa 🐝 3.5% @LongCovidHell on Twitter: a video that explains the physics of how N95s work...

Youtube link:
www.youtube.com/watch?v=eAda...

OP: x.com/LongCovidHel...
“Masks don’t work!” “Masks are bad for you!” Really? 🤔 Because scientists, construction workers, carpenters and most of Asia have been wearing masks for decades, with no ill effects. In fact, Japan has one of the best life expectancies in the world…
November 21, 2025 at 3:04 AM
drinfosec.bsky.social
Another 🎯🧵 by @drseanmullen.bsky.social on Twitter:

"I think I’ve finally cracked how to improve something we can call Reality Literacy.
My framework is grounded in Claude Steele’s work on stereotype threat, identity contingencies, and identity safety…"

Full 🧵
threadreaderapp.com/thread/19914...
I’ve got a million irons in the fire… but the one I’m most stoked (🥁) about? I think I’ve finally cracked how to improve something we can call Reality Literacy. My framework is grounded in Claude Steele’s work on stereotype threat, identity contingencies, and identity safety… which shows that lowering identity threat is a prerequisite for learning, openness, and cognitive flexibility. Once you understand that, everything makes sense: People don’t reject evidence because it’s wrong. They reject it because it threatens…
November 20, 2025 at 11:00 PM
drinfosec.bsky.social
🚨🧵by Dr. @harryspoelstra.bsky.social on Covid & cardiovascular disease:

"Covid-19 and cardiovascular disease in a total population-study of long-term effects, social factors and Covid-19-vaccination..."

Full 🧵
threadreaderapp.com/thread/19910...
Covid-19 and cardiovascular disease in a total population-study of long-term effects, social factors and Covid-19-vaccination 🔥A large dataset SWEDISH(!) study( Total Swedish population, 40-75y, n = 4,095,414) needing your urgent attention. ‼️“An increased risk of cardiovascular disease after Covid-19, also among mild cases, findings relevant from both a public health and healthcare perspective.” ➡️"Study, based on the total Swedish population aged 40–75 years, demonstrated that Covid-19 was associated with an increased risk of both incident cardiovascular disease and mortality (i.e., all cause mortality, CVD mortality and IHD mortality)."
November 20, 2025 at 10:40 PM
drinfosec.bsky.social
🚨🎯msg from @nychealthcommr.bsky.social & @nychealthy.bsky.social on Twitter:

"The NYC Health Department remains committed to our mission of protecting the health and safety of all New Yorkers. We will continue to provide factual information to anyone who seeks health guidance..."
The NYC Health Department remains committed to our mission of protecting the health and safety of all New Yorkers. We will continue to provide factual information to anyone who seeks health guidance. @NYCHealthCommr's statement: The CDC's claims regarding vaccines and autism are reckless. Undermining vaccines puts everyone's health at risk. There are strong and clear studies that demonstrate vaccines do not cause autism. Autism is a complex condition with many contributing factors. The CDC's framing further perpetuates cruel stereotypes, putting inappropriate blame, guilt, and fear on parents and caregivers. It is clear that the CDC is no longer a trustworthy source of information. The purpose of public health is to protect the health and safety of everyone, supported by facts grounded in science. The CDC is perpetuating a conspiracy theory that directly conflicts with robust scientific evidence to further sow confusion and doubt. The NYC Health Department will continue to be a beacon of scientific truth. -- Dr. Michelle Morse, Acting NYC Health Commissioner
November 20, 2025 at 10:35 PM
drinfosec.bsky.social
Excerpt from 👆
To make mistakes is human. To refuse to listen to frontline workers, vulnerable people, the insights of devolved leaders or scientific experts is unforgivable. The same arrogance that led those at the heart of government to hold party's while many of us died and grieved alone shaped the government's approach to the pandemic, and led to loss of life at an unprecedented, avoidable scale.
November 20, 2025 at 10:31 PM