A global view of HIV infection

Global number of new HIV infections

Treatment Cascade

Modelling software used for estimates

Approaches and tools for 2016 country-specific HIV and AIDS estimates

PLHIV 2017
New HIV Infections
Treatment Cascade
Modelling Software
AIDS Supplement 2017

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What we do

Work together to develop the methods used to generate global HIV and AIDS statistics

 

Who we are

An international group of epidemiologists, demographers, statisticians and public health experts that work together with UNAIDS and a Secretariat at Imperial College London and the University of Cape Town

Latest information

  • Meeting

    Key population stratified estimates across all HIV epidemic settings - April 2021

    The UNAIDS Reference Group held its virtual thematic meeting on Key population stratified estimates across all HIV epidemic settings from 19-22nd April 2021. The meeting featured presentations and group discussion to generate consensus recommendations. The programme was divided into the following...
  • Meeting

    Modelling Paediatric HIV and the need for ART - October 2020

    The purpose of this meeting was to provide technical recommendations for updates for Spectrum and accompanying estimation tools, used by countries to furnish annual HIV estimates. Objectives of this meeting were to: Improve the ability for countries to estimate and project the number of children...
  • Website

    UNAIDS 2019 Methods Journal Supplement

     

    UNAIDS and the UNAIDS Reference Group publish a biennial methods journal supplement comprised of a series of papers that detail the improved methods, approaches, and tools through which country teams create country-specific modelled estimates of their HIV epidemic. The 2019 supplement was published in the journal AIDS, and consisted of ten papers (listed below) and available open access here.

     

    • Summarizing the results and methods of the 2019 Joint United Nations Programme on HIV/AIDS HIV estimates (Case et al., 2019)
    • HIV estimates through 2018: data for decision-making (Mahy et al., 2019)
    • Global; regional and country-level 90–90–90 estimates for 2018: assessing progress towards the 2020 target (Marsh et al., 2019)
    • Updates to the Spectrum/AIM model for estimating key HIV indicators at national and subnational levels (Stover et al., 2019)
    • The Estimation and Projection Package Age-Sex Model and the r-hybrid model: new tools for estimating HIV incidence trends in sub-Saharan Africa (Eaton et al., 2019)
    • Estimating and projecting the number of new HIV diagnoses and incidence in Spectrum's case surveillance and vital registration tool (Mahiane et al., 2019)
    • National HIV testing and diagnosis coverage in sub-Saharan Africa: a new modeling tool for estimating the ‘first 90’ from program and survey data (Maheu-Giroux et al., 2019)
    • Parameter estimates for trends and patterns of excess mortality among persons on antiretroviral therapy in high-income European settings (Trickey et al., 2019)
    • Global variations in mortality in adults after initiating antiretroviral treatment: an updated analysis of the International epidemiology Databases to Evaluate AIDS cohort collaboration (Johnson et al., 2019)
    • HIV surveillance based on routine testing data from antenatal clinics in Malawi (2011–2018): measuring and adjusting for bias from imperfect testing coverage (Maheu-Giroux et al., 2019)
  • Meeting

    Technical updates for UNAIDS-supported estimation tools - October 2020

    The UNAIDS Reference Group held its technical updates meeting, Technical updates for UNAIDS-supported estimation tools 5-9th October 2020. The meeting featured presentations and group discussion to generate consensus recommendations. The programme was divided into the following sessions: Spectrum...
  • Meeting

    CSAVR technical review and model development

    The UNAIDS Reference Group held its virtual technical meeting on CSAVR technical review and model development on 5th June 2020. The meeting featured presentations and group discussion to generate consensus recommendations. The programme was divided into the following sessions:  CSAVR in the 2020...