The AIDS epidemic continues to take a staggering toll, but progress is possible

An estimated 36.9 million people were living with HIV worldwide in 2017. Of these, 3.0 million were children and adolescents under 20 years of age and about 19.1 million were women and girls. Each day, approximately 4,900 people were newly infected with HIV and approximately 2,580 people died from AIDS related causes, mostly because of inadequate access to HIV prevention, care and treatment services. However, new HIV infections among children are declining rapidly – approximately 58% since 2000 – due to scaled-up efforts to prevent mother-to-child transmission.



  • HIV epidemiology among children and adolescents

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  • Early infant HIV diagnosis

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  • ANC-based HIV testing for pregnant women

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  • Percentage of pregnant women living with HIV receiving most effective ARVs for PMTCT

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  • HIV positive children (aged 0-14) receiving antiretroviral therapy

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  • Adolescents aged 15-19 who were tested for HIV in the last 12 months and received the results

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Data sources + methodology

Global AIDS monitoring 2018

In order to monitor the HIV response and progress towards achieving global goals, countries submit national and subnational data on a host of indicators to the Global AIDS Monitoring (GAM) system. Annual submissions are reviewed and validated. Data consist of programmatic data for HIV prevention, testing and treatment. Other indicators require data from population-based surveys and surveys focused on key populations at risk of HIV infection.

For more information, click here.

Spectrum/EPP estimate modelling

UNAIDS, WHO and UNICEF are using the Futures Institute’s modelling software, Spectrum/EPP, to generate estimates, which support policy decisions concerning public health. Spectrum includes modules for HIV estimates and projections.

  • For more information, click here.
  • For estimates methodology, click here.

Nationally representative surveys

Multiple Indicator Cluster Surveys (MICS), Demographic and Health Surveys (DHS), AIDS Indicator Surveys (AIS), reproductive health surveys, sexual behaviour surveys and other nationally representative surveys are currently used to collect data on HIV and AIDS.