Temporal trend analysis of the HIV/AIDS burden before and after the implementation of antiretroviral therapy at the population level from 1990 to 2020 in Ghana

BACKGROUND: Antiretroviral therapy (ART) has helped reduce the burden of human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS) in the majority of countries. Its contribution to the HIV/AIDS burden in Ghana is still understudied. This study examined HIV/AIDS trends in Ghana before (1990–2004) and after (2004–2020) the implementation and expansion of ART. METHODS: We obtained HIV/AIDS epidemiology and treatment data for the years 1990–2020 from the United Nations Programme on HIV/AIDS. We investigated the impact of the ART rollout on HIV/AIDS in Ghana using Joinpoint regression models. RESULTS: The HIV incidence, prevalence, and AIDS-related deaths decreased significantly after 2004, as ART coverage increased from 1% to 2004 to 60% in 2020. The HIV incidence decreased by approximately 3% (AAPC = -2.6%; 95% CI: -3.2, -1.9) per year from 1990 to 2004 and approximately 5% (AAPC = -4.5%; 95% CI: -4.9, -4.2) per year from 2004 to 2020. Between 1990 and 2004, the HIV prevalence increased by approximately 5% (AAPC = 4.7%; 95% CI: 3.6, 5.8) per year but decreased by 2% (AAPC = -1.9%; 95% CI: -2.1, -1.6) per year between 2004 and 2020. Between 1990 and 2004, the annual increase in AIDS-related mortality was 14% (AAPC = 13.8%; 95% CI: 12.6, 15.0), but between 2004 and 2020, it decreased at nearly a 4% (AAPC= -3.6%; 95% CI: -4.7, -2.5) annual rate. CONCLUSIONS: We found trends indicating progress in Ghana’s fight against HIV/AIDS. However, the most significant declines occurred after the introduction of ART, suggesting that the scale-up of ART may have contributed to the decline in HIV/AIDS in Ghana. We advocate for the rapid expansion of ART in Ghana. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12889-023-16321-3.