Intellectual property

The website is owned and operated by the World Health Organization. All rights reserved to the World Health Organization.

All information on the website may not be copied, reproduced, modified, reedited, downloaded, denatured, transmitted or used in any way or in any form in conjunction with commercial purposes without the prior authorization in writing of the World Health Organization. Information may be reproduced only for private research. Any use of information on the website should be accompanied by an acknowledgment of the World Health Organization as the source.

Content disclaimer

All information presented on this website is for informational purposes only and does not constitute a legal contract or other covenant or agreement of any kind between the World Health Organization and any person or entity unless otherwise expressly specified. There is no warranty, expressed or implied, and without limitation, regarding the accuracy, completeness, legality, or usefulness of any information. The website may, in particular, comprise typographic and technical errors or other inaccuracies that the visitor recognizes and accepts by using the website. The World Health Organization shall not be liable whatsoever for any errors or omissions presented by and/or contained in the website or in any document referenced by the website. Changes may be periodically made to the information and no notice is required with respect to any changes. Information presented on the website is regularly updated.

The World Health Organization does not warrant in any way that the functions available through the website or access to the website will be assured without interruption and without error, nor that the website or the server of the website are free from contamination by computer viruses. In no circumstances will the World Health Organization be liable for damages, direct or indirect, incurred as a result of its use.

The World Health Organization cannot be liable, directly or indirectly, for any capacity or for reason whatsoever in the event of:

  • Interruption of service of the website due to maintenance operations or behavior of users of the website
  • Inaccessibility and/or incapacity of use of the website for any user of the website
  • Damage to equipment, loss of data, of any form whatsoever, while connected to the website

Website linking policy

The World Health Organization declines all liability related to links to the website . This website may contain links to other websites. These links are inserted only to provide accessibility and the World Health Organization assumes no responsibility concerning their content. Access to these websites is the unique responsibility of the user.


When visiting the website, a cookie may be installed automatically in your web navigation program. The cookies from our website do not gather any personal data about you. Generally, they record information concerning how the user's computer navigated the website (visited pages, day and time of the visit, etc.), which may be retrieved during following visits. Cookies may also contain information that the visitor provides in forms. Cookies are only used on our website for the length of your session. You can disable the use of cookies by changing the settings in your browser.