Finalised Projectsbreadcrumb separatorInfected not yet diagnosed
Infected not yet diagnosed


Surveillance to identify the exact extent of the number of undiagnosed people living with HIV remains insufficient across Europe. Different estimation approaches exist, using different sources of data, and many countries do not appear to produce any estimates.


A project group led by Andrew Phillips, UCL has worked to create a guidance document for countries on data requirements and available methods for estimation of the number of people with HIV. The document outlines all availabl approaches and provides the necessary guidance for using them. It is a first step towards a coordinated European approach.  

Presentations of results

HIV in hiding: Methods and data requirements for the estimation of the number of people living with undiagnosed HIV. Working Group on Estimation of HIV Prevalence in Europe, AIDS 2011

Presentation from the HIV in Europe 2009 Stockholm Conference, by Andrew Phillips, UCL

For more information please contact the HIV in Europe secretariat:

Dorthe Raben
Rigshospitalet, University of Copenhagen
CHIP, Department of Infectious Diseases
Section 2100, Finsencentret
Blegdamsvej 9
DK-2100 Copenhagen Ø
Tel: +45 35 45 57 82
Fax: +45 35 45 57 58