HIV/AIDS Epidemiology and Intervention Approaches
Summary
The global trajectory of HIV/AIDS has shifted markedly since the early 1980s, with an estimated 38 million people living with HIV worldwide by 2022. Epidemiological patterns vary greatly by region, with southern sub-Saharan Africa bearing the highest prevalence and parts of Eastern Europe and Central Asia showing recent resurgence. Key drivers include socioeconomic disparities, migration and conflict-related displacement, and concentrated epidemics among marginalised groups. Advances in antiretroviral therapy (ART) have transformed HIV from a fatal disease to a chronic condition, reducing mortality by over two-thirds since the 2000s. Prevention strategies such as pre-exposure prophylaxis (PrEP), harm-reduction interventions for people who inject drugs, and prevention of mother-to-child transmission have proven effective at scale. However, gaps in testing, linkage to care and sustained treatment adherence continue to hamper progress towards global targets. Integrated approaches that combine biomedical tools, behavioural support and structural interventions are essential to curb new infections and achieve the “95-95-95” goals for diagnosis, treatment and viral suppression by 2030.
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HIV/AIDS Epidemiology and Intervention Approaches publication trend
The graph below shows the total number of articles in hiv/aids epidemiology and intervention approaches across all publications each year (not limited to Nature Index journals).
Technical terms
Epidemiology: The study of the distribution, determinants and control of diseases in populations.
Incidence: The number of new cases of an infection occurring in a specified population over a defined time period.
Prevalence: The total number of existing cases of an infection in a population at a given point in time.
Antiretroviral therapy (ART): The combination of drugs that suppress HIV replication and restore immune function.
Viral load: The quantity of HIV RNA in a person’s blood, used to monitor treatment response and transmission risk.
Drug resistance: The ability of HIV to mutate and reduce the effectiveness of antiretroviral drugs.
References
- Refugees from Ukraine receiving antiretroviral therapy in destination countries and territories of the World Health Organization European Region, including EU/EEA countries, February 2022 to March 2023. Eurosurveillance (2024).
- Clinical, epidemiological, and drug resistance insights into HIV-positive patients in Meizhou, China. Frontiers in Cellular and Infection Microbiology (2024).
- Global, regional, and national HIV/AIDS disease burden levels and trends in 1990–2019: A systematic analysis for the global burden of disease 2019 study. Frontiers in Public Health (2023).
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