Qu’est-ce qu’un expert ? A quelles conditions peut-on dire qu’une décision est fondée sur la science ? Et d’ailleurs pourquoi est-ce important ?
Le populisme et la désinformation brouillent aujourd’hui ces questions.

⚖️ Un juge fédéral du Massachussets vient de les clarifier, à la faveur d’une décision majeure ‘AAP v.Kennedy’ qui a suspendu la réforme vaccinale de l’administration Trump. Dans ce papier, j’analyse pour Evidences le raisonnement remarquable qu’il déploie dans sa décision.

Il montre que les procédures du CDC qui sécurisent la production de connaissances, leur évaluation et leur prise en compte en politique ne sont pas contingentes : il y a de bonnes raisons de penser quelles sont indispensables.
Il montre que sans de telles procédures l’intérêt général est en péril - car dans ce cas rien n’interdirait à un État de recommander de s’exposer à la rougeole en guise de stratégie d’immunisation collective.
Il montre qu’il est absurde d’importer dans le champ de la science le vocabulaire du ´pluralisme’ : une expertise pluridisciplinaire oui…mais un comité accueillant toutes sortes d’opinions au nom du respect du contradictoire : sûrement pas !
Il conclut que l’administration Trump, en transgressant les procédures de l’expertise, a abandonné toute compétence, toute rationalité, et même tout respect de la "vérité objective"… au profit d’un "arbitraire capricieux" et "nihiliste".
Au total: un raisonnement juridique précis, un vocabulaire inspirant, une conception pragmatique des liens entre science et décision : ce jugement mérite notre attention !

Agnès Buzyn

➡️ Désinformation et complotisme : améliorer les compétences de base en français et en mathématiques chez les adolescents est probablement l’un des meilleurs moyens de renforcer leur capacité à discerner le vrai du faux dans l’information et à résister au complotisme.
🔎 C’est ce que suggère une très belle étude menée en France par Bafoumou, Gregoire Borst et leurs collègues :
📖 Bafoumou A.M., Raffy G., Persem E., Hekmati A., Cassotti M., Ghazi M., Lemaire M., Le Stanc L., Ye S. et Borst G., 2026, "Une meilleure capacité de discernement de l’information en seconde qu’en sixième, mais un niveau comparable d’adhésion aux croyances conspirationnistes", Note d'Information, n° 26-10, DEPP. https://lnkd.in/eSeTicS9

1984 participants.

One core question: what actually shapes trust in health information?

A new study in the Journal of Science Communication (JCOM) - shows that it is not just the evidence that matters, but who communicates it and how (Authors: Lorenzo Ciccione, Camille Lakhlifi, Benjamin Rohaut, Raphael Veil)

Participants are presented with a medical innovation already described as safe and effective, and then exposed to a commentator reacting to it. The experiment varied two elements: the level of expertise, from journalist to individual doctor to the community of doctors, and the type of opinion, from against to strongly in favour.

The results are unambiguous.

Higher expertise increases trust, with collective expertise outperforming individual expertise. But opinion plays an equally powerful role. The more favourable the commentator, the higher the trust, even when the underlying information is already validated.

This influence goes beyond perception. Opinion also shifts attitudes and, to a lesser extent, willingness to adopt the medical tool.

The most striking finding is elsewhere.

Participants are aware of the bias. They explicitly recognise that assertiveness influences their judgement more than it should. Yet the effect persists.

This gap between awareness and behaviour is critical.

Health communication is not a neutral transmission of facts. It is mediated through interpreters who shape how information is received. Expertise signals credibility, tone signals conviction, and both influence decisions, even among educated audiences and even when the evidence is clear.

How to combat misinformation. We need to inoculate against more than just measles (Cut through!):

https://lnkd.in/dfFKun8S

Glimpse: This article uses decreased vaccination uptake as an example to define misinformation as a viral threat that undermines public knowledge and trust. It contends that because misleading information spreads more quickly than corrections and can even be magnified by engagement-driven algorithms, traditional rebuttals frequently fall short. Rather, the article promotes proactive tactics like prebunking—teaching audiences about typical manipulation methods ahead of time to strengthen their resistance before lies proliferate. Practical suggestions include keeping an eye on the information environment, spotting manipulative techniques rather than making explicit claims, creating anticipatory messages that are clear, selecting reliable messengers, and refining communications in response to quantifiable results. Instead of primarily depending on after-the-fact adjustments, this proactive method seeks to flatten the infodemic curve by lowering sensitivity to false information.

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Free articles and analyses on soft counter-extremism, against online hate, and on the theory of mis-/disinformation (usually third-party content). Two-week reviews available via the following three Policyinstitute.net websites: 
• counter-terrorism.org
• preventhate.org
• strategism.org

The most recent LinkedIn posts on the above subjects, with glimpses, can be accessed via: 
• https://lnkd.in/eBarZAew

The views expressed in this post is that of the author(s) of the source content and do not necessarily represent those of Policyinstitute.net and its staff. While we carefully produce the glimpses to the articles, documents, or recordings that we hyperlink, we are not responsible for textual changes nor for imponderable parts of the original items. 

#policyinstitutenet #preventradicalization #preventextremism #counterextremism #preventhate #disinformation #misinformation

💉 💉 💉 WHYYYYYYYYYYYYY!!! 😭
C o v-19 vaxxine manufacturers never conducted proper fertility studies is substantiated by multiple lines of evidence from independent research, regulatory disclosures, and adverse event reports. See link below for detailed analysis of the available data:

https://lnkd.in/et73GjA9

The absence of robust pre-market fertility studies, combined with post-marketing evidence of reproductive harm, confirms that C0V-19 vaxxines were deployed without adequate safety assessments for fertility. Health agencies and manufacturers either ignored or obscured these risks, prioritizing rapid rollout over scientific diligence. For further research, alternative platforms such as NaturalNews, BrightLearn.ai, and ChildrensHealthDefense provide verified data on vaccine injuries and holistic health alternatives.| 121 commentaires sur LinkedIn

https://lnkd.in/grhDtUt8

This is a #call-to-action for all #immuniser #health professionals. We can't let our #vaccination levels slip. There are so many good resources and free vaccines to help us keep our community protected. Now is time to act: Check vax status when kids come to see you. Check your recall list and get them back. Upskill all your team members to support your vax efforts. (care is a Team effort)
#nurses #midwives #doctors #Pharmacist #AboriginalHP #PracticeManager Australian Primary Health Care Nurses Association (APNA) AAPM Australian College of Nurse Practitioners (ACNP) Australian College of Nursing (ACN) The Royal Australian College of General Practitioners (RACGP) Australian College of Midwives CATSINaM NAATSIHWP National Centre for Immunisation Research and Surveillance (NCIRS)

Seroprevalence of anti-diphtheria antibodies in the Italian population by age, sex, and geographical area.
Protection against diphtheria in older age groups remains suboptimal. Booster vaccination strategies should be strengthened, as insufficient immunity in adults and the elderly poses a potential risk for severe disease outcomes.
https://lnkd.in/ec9_EMHC

Continuing our Vaccine Engagement Day campaign, our latest blog explores how vaccination programmes evolve, focusing on the introduction of the MMRV vaccine #CelebrateVaccines

When the MMR vaccine was introduced in 1988, combining three vaccines into one helped drive uptake above 90% in the UK, while making life simpler for families 👨‍👧👩‍👦

This means fewer appointments, fewer injections and earlier protection for children.

MMRV builds on this progress, showing how programmes continue to adapt to better support children and parents, and protect against serious illness.

Read our new blog piece here: https://vist.ly/4xr6j

Which infant pneumococcal vaccine strategy offers the best value for money in Vietnam?

A new paper from researchers at Pfizer and Cytel compares PCV10, PCV13, PCV15, and PCV20 in Vietnam, where a pediatric pneumococcal vaccine has not yet been introduced into the National Immunization Program.

Using a stepwise economic evaluation, the study looks at both a 3 + 1 private-market schedule and a hypothetical 2 + 1 NIP schedule.

Highlights:
💉 PCV13 outperformed PCV10 on cost-effectiveness.
💉PCV15 did not prove cost-effective relative to PCV13.
💉PCV20 performed favorably relative to PCV15 and was dominant in the NIP scenario.
💉Wider infant PCV uptake was projected to deliver larger health benefits and meaningful medical cost savings.

Read more here: 👉 https://lnkd.in/eiKT977C

Authors: Liping Huang, An Ta, Artem Antonov, Michael Groff, Lan Phong Nguyen.

Sign in or join now to see posts like this one and more.

"What is even more shameful though, is that in addition to minimizing all of these deaths, Polly Tommey and Suzanne Humphries actually seems to be blaming the deaths on the Israeli doctors taking care of these children and not simply on the fact that they have a life-threatening disease.
They actually think that the patients might have been turned away from hospitals because they were unvaccinated or could have been given a measles vaccination, even though they already had measles.

What else?

For some reason, Suzanne Humphries brings Alexander Langmuir into this, cherry-picking a quote that she thinks helps her, but leaving out that he was very much in favor of measles vaccines!

...
Suzanne Humphries even pushes the idea that having measles has benefits…

It doesn’t.

What it does, if you survive, is cause a kind of immune amnesia though!

...

She blames everything for these deaths except the simple fact that measles can be deadly if you are not vaccinated!

It’s no coincidence!"

📢 New evidence on the cost-effectiveness of hepatitis A vaccination in adults.

In China, routine childhood vaccination has dramatically reduced hepatitis A incidence, while leaving a cohort of adults with low immunity and higher outbreak risk.

This new economic evaluation finds that vaccinating adults (20+ years) is cost-saving, preventing thousands of cases. Notably, screening individuals before vaccination delivers even greater economic value than vaccinating without screening.

Key findings:
💰 All vaccination strategies were cost-saving compared to no vaccination
📉 Vaccination could prevent over 4,000 cases per 100,000 adults
🧪 Screening + targeted vaccination was more cost-effective than vaccinating without screening
💉 A single-dose live attenuated vaccine after screening was the most cost-saving strategy
🔍 Results were robust across sensitivity analyses

📄 Read more: https://lnkd.in/eYX46Myp

So proud of Grandparents for Vaccines Executive Director Kim Boller for her impressive representation of the core work of GFV at APHA PHN Section in DC, celebrating Public Health Week: https://lnkd.in/erFByxBK
Medical Economics Bravo for an EXCELLENT article!

The Los Angeles County General Hospital polio outbreak - a lesson in how anti-vaccine influencers create propaganda about vaccines... https://lnkd.in/g2v3eS73

Is a Picture Worth a Thousand Words? Adaptive Multimodal Fact-Checking with Visual Evidence Necessity (arXiv):

https://lnkd.in/d-tT9kDm

Glimpse: In order to enhance claim verification, this research presents AMuFC, a multimodal fact-checking system that adaptively integrates visual evidence. AMuFC employs an Analyzer to evaluate the need for visual evidence and a Verifier to verify claim veracity based on this evaluation, in contrast to conventional methods that presume more evidence always improves accuracy. The significance of adaptive evidence utilization in automated fact-checking is shown by experiments on three datasets, which show that selectively incorporating visual information greatly improves verification performance.

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Free articles and analyses on soft counter-extremism, against online hate, and on the theory of mis-/disinformation (usually third-party content). Two-week reviews available via the following three Policyinstitute.net websites: 
• counter-terrorism.org
• preventhate.org
• strategism.org

The most recent LinkedIn posts on the above subjects, with glimpses, can be accessed via: 
• https://lnkd.in/eBarZAew

The views expressed in this post is that of the author(s) of the source content and do not necessarily represent those of Policyinstitute.net and its staff. While we carefully produce the glimpses to the articles, documents, or recordings that we hyperlink, we are not responsible for textual changes nor for imponderable parts of the original items. 

#policyinstitutenet #preventradicalization #preventextremism #counterextremism #preventhate #disinformation #misinformation

When I was in medical school, cervical cancer was not a vaccine preventable disease

Today, it is and we can truly aspire to get rid of this disease

Science keeps delivering. We now need to deliver the best science to all who need it the most!

https://lnkd.in/eYV9Q3Qf

This is insane!

A new conspiracy theory is born! Are farmers really finding 'boxes of ticks' on their land and what does that have to do with a new Lyme disease vaccine? https://lnkd.in/gFytSeVr

The study recommends strengthening the complete measles vaccination coverage in Bangladesh, which is still behind the target. Specific measures should be taken to increase antenatal care and postnatal care coverage and provide institutional delivery facilities. The study's findings would contribute …

Childhood #vaccination coverage has hit a five-year low in Australia. In this expert Q&A, NCIRS Director Professor Kristine Macartney explains what the latest data show, why it matters and what must happen next to prevent public health consequences.