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Posts by Vittoria Colizza

What we choose to implement - and when - matters. Our work shows that proactive screening strategies can reduce transmission by ~40% vs reactive responses. A key lesson for preparedness. In PNAS Nexus: ow.ly/cLnu50YCrcn

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Great discussion with @billhanage.bsky.social and the audience at #ESCMIDGlobal2026 during our session “Pathogens and people: modelling epidemics for preparedness”. Strong focus on how to improve preparedness in collaboration with public health institutes - lots to take forward.

1 day ago 6 3 1 0

Still few days to apply!

1 week ago 2 3 0 0
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Open position — AI-driven causal inference of behaviors in response to an epidemic 30/03/2026 ​ PhD position on AI-driven causal inference of behaviors in response to an epidemic (SPILL-AI) Location:  Paris, France Institution:  INSERM | Sorbonne Université Faculty of Health...

PhD opportunity at SUMOC (Sorbonne Université | INSERM), Paris, within the EPIcx lab.

🦠 Project: SPILL-AI (mobility data, AI, epidemic modeling)
⚠️ Selected candidate will be submitted to competitive funding (SCAI)

Apply by April 12, 2026
www.epicx-lab.com/open-positio...

3 weeks ago 5 5 0 1
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Join ESPIDAM 2026 — the European Summer Program in Infectious Disease Analysis & Modelling!

A unique training opportunity for early-career researchers in epidemic modelling 🦠📊

⏳ Early bird deadline: March 31

www.su.se/english/divi...

1 month ago 7 7 0 0
https://www.epicx-lab.com/open-position-mdash-network-epidemiology-of-healthcare-associated-infections.html

t.co/aMHzKyW5dc

t.co/lu9xV8gRmA

1 month ago 0 0 0 0

Two postdoc positions open at SUMOC (Sorbonne Université | INSERM), Paris, within the EPIcx lab.

🦠 Network epidemiology of healthcare-associated infections (ARCANE)
🧠 Coupled behavior–disease modeling (PREVIX)

2-y positions | Start June 2026
#epidemiology #networks #matrices

1 month ago 9 13 1 1
Mobility-driven synthetic contact matrices as a scalable solution for real-time pandemic response modeling - Nature Communications Contact matrices are used to describe social mixing patterns and inform mathematical models of disease transmission. Here, the authors evaluate the accuracy of synthetic contact matrices generated usi...

Mobility-based synthetic contact matrices offer a promising alternative for real-time pandemic response modeling. How do they compare with traditional empirical contact matrices?

We address this question in our latest study, now published in Nature Communications ⬇️
doi.org/10.1038/s414...

2 months ago 7 3 1 0

Joint work with
@santepubliquefrance.fr

#mpox #publichealth #behavior #epidemiology
@inserm.fr @fac-sante-sorbonne.bsky.social
#SUMOC

2 months ago 0 0 0 0
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These results highlight the key role of spontaneous community-driven behaviour change, and the importance of risk communication and community engagement in outbreak control.

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Model results aligned with post-outbreak survey data (ERAS 2023) reporting that ~46% of MSM reduced sexual partners during that outbreak.

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Instead, the decline was best explained by widespread behavioural change, adopted by ~half of MSM, *independently of individual risk level*.
This prevented an estimated ~70% of potential cases during summer 2022.

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We found that vaccination and infection-induced immunity alone could not explain the early downturn.

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We used a network model of mpox transmission among MSM, grounded in sexual behaviour data, to disentangle the drivers: post-exposure vaccination, immunity among highly active individuals, behavioural adaptations.

2 months ago 0 0 1 0
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Role of behaviour change in controlling the 2022 Paris mpox outbreak Nature Health - Behaviour changes, rather than vaccination or postinfection immunity, best explained the sudden decline of mpox cases among men who have sex with men during an outbreak in the Paris...

*New paper in Nature Health*

Why did the 2022 mpox outbreak in Paris decline so abruptly?

rdcu.be/eZ24H

2 months ago 31 12 1 0
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Time to party! 🎄✨ #SUMOC

4 months ago 4 0 0 0
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Scientific group : French Research action on modelling epidemics FRAME FRAME :French Research action on modelling epidemics

epicontacts2025.weebly.com/agenda.html

anrs.fr/en/scientifi...

4 months ago 2 0 0 0

Great second day at the #EPICONTACTS2025 workshop — engaging talks at the interface of contact matrices, epidemiology, behavioral data, and network science.

This initiative is part of FRAME, the French Research Action on Modeling Epidemics supported by
@anrs-mie.bsky.social

4 months ago 10 1 1 1
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EPIcx diamonds 💎

4 months ago 8 1 0 0
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Two days of great scientific discussions with >100 infectious disease modellers during the annual meeting of FRAME (the French Research Action on Modelling Epidemics), supported by @anrs-mie.bsky.social. What a fantastic research community!

5 months ago 14 7 1 0
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An oldie 😀🙏

4 months ago 2 0 0 0
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Brilliant and inspiring talk by Shweta Bansal @bansallab.bsky.social at #Epidemics10 on contact patterns at the interface of data, modelling and public health — and even across species!

4 months ago 27 5 2 0
Public Health Research Club – Session #3 - IReSP

iresp.net/animations/p...

5 months ago 0 0 0 0
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Many thanks to IReSP (Institut pour la Recherche en Santé Publique) and the Inserm Public Health Institute for the invitation to the Public Health Research Club #3. Proud to share #SUMOC perspectives on strengthening modeling in public health preparedness.
@inserm.fr @fac-sante-sorbonne.bsky.social

5 months ago 1 0 1 0
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Climate and health at the Accademia Nazionale dei Lincei.

lincei.it/node/15488

5 months ago 2 0 0 0
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Lessons from COVID-19: How Data and Modelling Evolved During the Pandemic A new MOOD Horizon 2020 study reveals how COVID-19 modelling, data use, and collaboration evolved across Europe to strengthen future pandemic preparedness.

🔬 A new #MOOD #HorizonEU study reveals how #COVID19 modelling, data use & collaboration evolved across #Europe - offering key lessons for future pandemics.
📖 🔊Read more + listen: www.worldpop.org/blog/lessons...

@uosmedia.bsky.social @esthervk.bsky.social @horizoneu.bsky.social @ukhsa.bsky.social

5 months ago 8 1 0 2

📈🦠 On how COVID-19 modelling supported public health decisions in Europe #Eurosurveillance

www.eurosurveillance.org/content/10.2...

5 months ago 3 0 0 0

Our analysis of modelling practices, data use, and science-policy interactions during the COVID-19 pandemic is out on @eurosurveillance.org this week.

www.eurosurveillance.org/content/10.2...

Wonderful collaborative effort conducted in the context of mood-h2020.eu

Read the thread below 👇

5 months ago 10 4 0 0
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International Workshop on Social Contacts for Epidemic Modeling
Paris, Dec 8-9, 2025

epicontacts2025.weebly.com

Dec 8: Training session on contact data for ID modeling.
Dec 9: Workshop on methodological advances in the field, featuring a strong lineup of invited speakers.

@anrs-mie.bsky.social

6 months ago 14 6 0 1

First SUMOC talk ✨

Prof. Mauricio Santillana (Northeastern University) on forecasting outbreaks using mathematical models & internet-based data - lessons from COVID-19.

#SUMOC
@sorbonne-universite.fr @fac-sante-sorbonne.bsky.social @inserm.fr

10 months ago 10 1 0 0