The National Institute for Public Health and the Environment (RIVM) uses cookies to record web statistics of visitors to its website. A cookie is a small text file that is stored on your computer to help us identify you during subsequent visits to our website.

No personal information

Cookies contain only a unique number. They do not contain any personal information. RIVM cannot use cookies to identify you personally, nor


If you object to the use of cookies, you can disable them in the settings of your browser. Your use of will not be affected if you decline to accept cookies. To learn more about cookies and how to disable them, we advise you to visit the website

Web statistics

The RIVM website uses web statistics. Analysis of this data enables us to gear our website to the needs of our visitors. We do not use the collected data for any other purposes and we do not disclose it to third parties.
To save this data our website uses cookies, log files and JavaScript codes on the pages. We gather the following information:

  • The address of your Internet provider
  • The browser that you use (such as Internet Explorer or Firefox)
  • The time and duration of your visit
  • The pages that you visited

Piwik Pro is used to gather statistics on the use made of the RIVM website. The following cookies are used:

Cookies used for web statistics

Basic data Purpose
_pk_id Is a user new to the site or a repeat visitor?
_pk_ses Which pages were visited?
_pk_ref From what site did the user come?