Latest updates

VAC4EU to participate in ISPE 2026 in Milan!

VAC4EU to participate in ISPE 2026 in Milan!

VAC4EU will be participating in the 42nd Annual Meeting of the International Society for Pharmacoepidemiology (ISPE), taking place in Milan, Italy, from 29 August to 2 September 2026. The meeting […]

16 Jul 2026 Learn more
New paper from the GCoVS project focussed on GBS validation

New paper from the GCoVS project focussed on GBS validation

A new paper from the VAC4EU network was published in Vaccine as part of the Global COVID Vaccine Safety (GCoVS) project, an initiative coordinated by the Global Vaccine Data Network (GVDN) with extensive involvement from VAC4EU. The authors describe how they estimated the Positive Predictive Value (PPV) of Guillain–Barré syndrome (GBS) across several data sources from our network. VAC4EU played a key role in enabling European participation in this work, which demonstrates the impact of coordinated case validation across multiple real-world data sources and global collaboration. The research also highlights that Brighton Collaboration criteria and in-hospital medical records are essential for accurate GBS validation, as diagnostic certainty improved significantly when cases were identified through hospital data. 

17 Mar 2026 Learn more
New Journal Club session 26 February!

New Journal Club session 26 February!

Sabrina Giometto will present at the next appointment of the VAC4EU Journal Club. Register now to secure your spot!

12 Feb 2026 Learn more
VAC4EU sets standard for harmonised case validation in real-world data studies

VAC4EU sets standard for harmonised case validation in real-world data studies

Our most recent open-source paper was published last week in Clinical Epidemiology! The article describes how VAC4EU developed a scalable pipeline for outcome validation using Brighton Collaboration case definitions and adapting Levels of Certainty criteria for real-world data as needed. Beyond VAC4EU, this framework could now become a blueprint for other researchers conducting retrospective pharmacoepidemiology studies with multiple heterogenous databases.

04 Feb 2026 Learn more
Uncertainty in science: Should we say more, or less? New Journal Club session 21 January

Uncertainty in science: Should we say more, or less? New Journal Club session 21 January

A more scientifically literate public enables better engagement and understanding on complex socioscientific issues like COVID-19 or climate change. But how far do we need to go as researchers, communicators […]

06 Jan 2026 Learn more
VAC4EU celebrates 5 years: Reflections and future directions

VAC4EU celebrates 5 years: Reflections and future directions

On the 4th of November 2025, 150 people came together both online and in Brussels for a milestone event celebrating the 5th anniversary of VAC4EU. The symposium brought together members, regulators, and key stakeholders in the […]

07 Dec 2025 Learn more
New edition of VAC4EU Community Newsletter

New edition of VAC4EU Community Newsletter

We’ve certainly been busy since our last newsletter in January, with a lot to share in this new edition of the VAC4EU Community Newsletter. What has the network been up […]

07 Oct 2025 Learn more
Celebrate 5 years of VAC4EU with a symposium dedicated to pandemic preparedness

Celebrate 5 years of VAC4EU with a symposium dedicated to pandemic preparedness

VAC4EU will be celebrating its 5th anniversary in Brussels on the 4th of November with a full-day hybrid symposium focused on discussing the role of vaccines in pandemic preparedness. Join […]

03 Oct 2025 Learn more
Interested in vaccine safety in pregnancy? Join us for the next VAC4EU Journal Club appointment!

Interested in vaccine safety in pregnancy? Join us for the next VAC4EU Journal Club appointment!

When public health becomes a political battlefield, pregnant women and their babies become collateral damage. In a world where vaccine misinformation outpaces science we urgently need transparent and robust evidence […]

02 Oct 2025 Learn more