• 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)
  • Website

    Remembering Professor Basia Zaba

    The UNAIDS Reference Group wishes to celebrate the tremendous contributions of Professor Basia Zaba, who passed away on 12 July.

    Professor Zaba made a huge contribution to the work of the UNAIDS Reference Group since its inception through leadership of the ALPHA Network and other collaborations, and Basia taught us to approach our work with passion, vigour, and tenacity. While Basia is no longer with us, Basia's legacy will continue to influence our work and how we approach our work.

    Our thoughts remain with Basia's family and friends.

  • Software

    Prevalence and Incidence Calculator (UNAIDS RG) v1.03

    A web-tool, built using ‘inctools’, to calculate HIV incidence from prevalence survey data that include biomarkers of recent infection. The existing tool web-interface were further developed specifially for the UNAIDS Reference Group (made available December 2017), to be used for UNAIDS estimates for 2018+.

  • Data


    View and download UNAIDS published HIV estimates for all countries

  • Data

    National HIV Estimates Files

    National files of HIV estimates generated using the AIDS Impact Model (AIM) in Spectrum.

  • Data

    GIS data from MEASURE DHS

    Spatial data repository with geographically linked health and demographic data from MEASURE Demographic and Health Surveys (DHS) and the US Census Bureau.

  • Data

    World Population Prospects

    UN Population Division demographic data online.

  • Data

    Measure DHS

    Data from nationally representative population-based surveys.

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    HIV Modelling Consortium

    Mathematical modelling to support policy decision making.

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    Stop TB Partnership

    An international entity aligning actors in the fight against TB.