51-country ecological study links ART coverage with lower AIDS mortality, 2010–2024

Higher antiretroviral therapy coverage was associated with lower AIDS-related mortality across 51 African countries between 2010 and 2024 in a longitudinal ecological study using publicly available data from the World Health Organization and the Joint United Nations Programme on HIV/AIDS. After accounting for HIV incidence, the fixed-effects panel regression estimated a negative association between ART coverage and mortality: β = −0.0095, standard error 0.0026, p < 0.001. HIV incidence remained a significant positive predictor of mortality, with β = 0.2355, standard error 0.0343, p < 0.001. The research was published in BMC Infectious Diseases on 31 August 2026.

Researchers initially obtained data for all 54 African countries, then assessed data completeness and cleaned the records, leaving 51 countries in the final analysis. The investigation combined descriptive statistics, Spearman’s rank correlation, fixed-effects panel regression and linear mixed-effects modelling to examine relationships among ART coverage, HIV incidence and AIDS-related mortality. ART coverage increased substantially over the study period, but the extent of that increase varied among countries. Because the study used country-level observations rather than patient records, it was designed to evaluate population-level associations and cannot establish whether ART directly caused changes in mortality for individual patients.

The nonparametric analysis detected a weak positive association between ART coverage and HIV incidence, with ρ = 0.075 and p = 0.044. In contrast, the fixed-effects analysis associated higher ART coverage with lower AIDS-related mortality after accounting for HIV incidence. The linear mixed-effects sensitivity analysis produced similar findings. Taken together, the models showed a consistent inverse association between ART coverage and mortality alongside a positive association between HIV incidence and mortality. The results therefore support an association between broader ART coverage and reduced AIDS-related mortality at the country level, rather than a causal estimate of treatment benefit.

The study’s design also limits what can be inferred about individual outcomes and differences between countries. As an ecological longitudinal analysis, it does not follow individual patients, directly measure treatment effects or establish the mechanisms responsible for the observed associations. The summary evidence does not identify how missing or heterogeneous country data may have affected the estimates, and it does not establish that data quality, health-system capacity or the timing of treatment expansion influenced the results. The authors described the findings as continent-wide evidence supporting continued expansion of equitable ART access and strengthened health systems as approaches for reducing HIV-related mortality and advancing progress toward ending the HIV epidemic in Africa. The present study, however, documents associations across 51 countries over 2010–2024 rather than testing a clinical intervention or directly measuring the effects of those strategies.

Subject of Research: Ecological analysis of ART coverage, HIV incidence and AIDS-related mortality in 51 African countries, 2010–2024

Article Title: An ecological and longitudinal analysis of the African continent (2010–2024): modeling AIDS-related mortality, ART coverage, and HIV incidence across 51 countries

Article References: Al-Ameen, U. O. (2026). An ecological and longitudinal analysis of the African continent (2010–2024): modeling AIDS-related mortality, ART coverage, and HIV incidence across 51 countries. BMC Infectious Diseases. https://doi.org/10.1186/s12879-026-14349-5

Image Credits: AI Generated

DOI: 10.1186/s12879-026-14349-5

Keywords: HIV/AIDS, antiretroviral therapy, ART coverage, AIDS-related mortality, HIV incidence, Africa, ecological study, panel regression, public health, ecological, longitudinal, analysis