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Blog & analyses

Legal analyses and updates on the EHDS domain — health data, privacy and the EHDS Regulation.

14 Aug 2026

Basic knowledge and the EHDS: the specialis-rule

The lex specialis rule is one of the three conflict rules taught to every (Continental) law student in the first weeks of their studies, yet it is consistently misapplied in Dutch health law. This article addresses three misconceptions: the rule concerns specific legal provisions rather than entire statutes; it applies only after the lex superior rule and solely between rules of equal rank; and it applies exclusively in the event of a genuine conflict—not when the specific provision is silent. For the EHDS, this implies, among other things, that European data law remains applicable in health care, and that the even special national laws cannot override the EHDS.

26 Jul 2026

The position of the Data Protection Officer

The Data Protection Officer must not receive instructions or be penalized for his work, is bound by a duty of confidentiality, and must not hold a second role that conflicts with his position.

26 Jul 2026

The resources required by the Data Protection Officer

The GDPR requires organizations not only to appoint a Data Protection Officer (DPO) but also to create the conditions necessary for them to effectively perform their duties. Part 1 on the DPO’s position: involvement, resources, and visibility.

18 Jun 2026

Feedback on the draft EHDS Implementation Act

The EHDS Implementation Act (GIS Act) conflicts with EU law. The Ministry of Health (VWS) disregards the internal data market, bypasses the Authority for Consumers and Markets, and establishes a non-independent supervisory authority.

12 Jun 2026

GIS Act: why the HDAB needs legal personality

The Draft GIS Act (concerning the EHDS) creates a supervisory body whereby the State imposes fines on itself. Without its own legal personality and separate from VWS, the GDA is not the independent HDAB required by the EHDS. This article explains why — and proposes an alternative.

24 May 2026

The HDAB takes administrative decisions: what does that mean?

Becoming HDAB means becoming an administrative body that makes administrative decisions. Dr. Vlieger explains what that means legally — for the HDAB itself and for those who wish to lodge an objection.

14 Apr 2026

The open data of semi-public bodies

Many semi-governmental institutions believe that open data obligations do not apply to them. The legal reality is different: the EU Implementing Regulation on High-Quality Datasets applies directly.

13 Apr 2026

EHDS everywhere or just a layer on top?

EU countries build EHDS access services on top of their current national systems. But there is no discussion whether the EHDS allows this.

13 Apr 2026

The concept of Science in the Digital Omnibus

The debate on the EU definition of scientific research in the Digital Omnibus. Dr. Vlieger defends a neutral, factual definition without normative criteria.

13 Apr 2026

No separate ethical assessment alongside the EHDS

The EHDS prescribes a comprehensive and uniform assessment by the HDAB. A separate ethical assessment adds nothing and hinders science.

13 Apr 2026

Long live AI, says AI!

Are jobs at risk due to AI? Antoinette Vlieger asked AI itself which tasks she is taking over, what that contributes, and what room remains for humanity in healthcare.

13 Apr 2026

The free flow of health-ICT

VWS consults on healthcare addressing. Dr. Vlieger points out tension with the free movement of services.

13 Apr 2026

The EHDS, PFAS and marriage counseling

The EHDS has been in effect for a year. From PFAS to chronic complaints: this is how the reuse of health data works in practice.

13 Apr 2026

The Digital Omnibus and CJEU Scania

It is argued in various publications that the draft Digital Omnibus (concerning, among other things, amendments to the GDPR) would nullify the legal effect of the Scania judgment. However, a careful reading of the text suggests otherwise. The Commission is not proposing a nullification, but a demarcation of scope.

13 Apr 2026

Who can be a member in the EHDS-board?

The EHDS Council has been established. But who is eligible to sit on it on behalf of a Member State? Dr. Vlieger analyzes the conditions — and the ambiguities — in the regulation.

13 Apr 2026

The EHR must comply with Brussels requirements

The EHDS grants the European Commission the authority to set requirements for EHR systems. What does this mean for hospitals, healthcare providers, and IT suppliers?

04 Feb 2026

A persistent EHDS misunderstanding

There’s a persistent misunderstanding regarding the EHDS. Data holders must have their datasets included in a data catalog. However, data users can apply for a permit, even for data not yet included in the catalog. Therefore, the application procedure cannot be (solely) tied to the catalog.

26 Aug 2025

The Dutch Bodily Material Act must be rewritten

The Dutch WZL concerns body material, the EHDS concerns data. Nevertheless, there is overlap. Vlieger analyzes shortcomings of the draft law.

10 Aug 2025

When will the EHDS come into effect?

The EHDS requires significant preparation. A Health Data Access Body must be established, software and hardware must be built or interconnected, and additional legislation is required. Therefore, the EHDS will enter into force in phases. Read about the timeline here.

10 Aug 2025

The EHDS and the Secure Processing Environment

Anyone wishing to reuse data under the EHDS will not receive it, but will gain access to it in an SPE. What does such a Secure Processing Environment entail?

10 Aug 2025

The Health Data Access Body

The Ministry of Health, Welfare and Sport will soon determine who will become the HDAB; who will be the source of permits for the beneficial reuse of health data. Who can be this, and who cannot? And what will this HDAB be responsible for?

10 Aug 2025

The EHDS leads to greater health data safety

The arrival of the EHDS is causing public unrest. Will our health data still be safe? The regulation will indeed make more data available for beneficial reuse. But at the same time, health data will also be much more secure. So, kudos to the EHDS.

10 Jun 2025

The rule of law for medical scientists

As a medical scientist, you might think that you have little to do with the rule of law. Nothing could be further from the truth. Understanding the separation of powers is important to know when you can disregard a Privacy Authority. It is also useful to understand that lobbying starts with the question of what the right place is.

04 Jun 2025

EHDS Data Hubs

The EHDS introduces the role of health data intermediation entities or Data Hubs. Dr. Vlieger explains when and why this role is useful — for efficiency, scientific relevance, and trust.

02 Jun 2025

Patient control over health data under the EHDS

Health data may currently be used for research with consent. Under the EHDS, this will become an opt-out. What will this look like? Who will oversee this? Is that ethical?

02 Jun 2025

The existing free flow of health data

The free movement of health data is not a novelty of the EHDS: it is enshrined in Article 1 of the GDPR, among other. Dr. Vlieger explains which rights scientists can already claim.

01 Jun 2025

The EHDS request and the post-COVID rule of law

The EHDS is regarded by people who distrust the government as a manipulative trick. But suspicious people will soon benefit enormously from the EHDS request.

01 Jun 2025

The law is not the same as ethics

In medico-legal discussions, law and ethics are often confused. Dr. Vlieger explains the fundamental distinction and what that means for the application of the EHDS.

01 Jun 2025

When can you ignore medical codes of conduct?

Codes of conduct are not law — but are often treated as such in healthcare. Dr. Vlieger explains when soft law is legally binding and when you can disregard it.

01 Jun 2025

Trusted Data Holders and the EHDS

The EHDS introduces the role of 'trusted health data holder.' Dr. Vlieger explains what this role entails and how it can contribute to an efficient health data infrastructure.

01 Jun 2025

The citizen service number ban and the EHDS

The prohibition on using the civil service number hinders medical-scientific research. Dr. Vlieger analyzes the legal knot and explains why the EHDS offers the opportunity to resolve this.

14 May 2025

GDPR, purpose limitation, science and corona

The GDPR principle of purpose limitation seems to be an obstacle to the reuse of health data for medical big data research. That is incorrect. Dr. Vlieger explains.

14 May 2025

What is a DPIA, what not?

When is a Data Protection Impact Assessment mandatory? And what is the role of the Data Protection Officer? Dr. Vlieger explains what a DPIA is and isn't.

02 Apr 2025

Why is the EHDS revolutionary?

The EHDS, a European law on health data, introduces something special: a right to work with data, for anyone who wants to do something useful.

01 Apr 2025

European law

What is a directive or regulation? Dr. Vlieger explains the basics of European law for everyone working with the EHDS.

01 Apr 2025

Which data are covered by the EHDS?

The European Health Data Space aims to make more health data available for medical research. What data are EHDS-data that have to be shared with researchers?

31 Mar 2025

Why the EHDS?

What is the EHDS and why does it exist? Dr. Vlieger explains the background, the European data strategy, and the objectives of the regulation.

30 Mar 2025

Pseudonymization and the GDPR

Are pseudonymous data personal data? Dr. Vlieger explains the relative concept based on case law of the European Court.

29 Mar 2025

Contracts in medical research

All those contracts for medical scientific research? The differences clearly explained.

28 Mar 2025

Subsidy or assignment?

What is the difference between a subsidy and an assignment? People often think, “It’s been tendered, so it must be a commercial contract,” but that’s not true. The difference is important, a.o. for VAT purposes.