Mapping age- and sex-specific HIV prevalence in adults in sub-Saharan Africa, 2000-2018

Emily Haeuser*, Audrey L Serfes, Michael A Cork, Mingyou Yang, Hedayat Abbastabar, E S Abhilash, Maryam Adabi, Oladimeji M Adebayo, Victor Adekanmbi, Daniel Adedayo Adeyinka, Saira Afzal, Bright Opoku Ahinkorah, Keivan Ahmadi, Muktar Beshir Ahmed, Yonas Akalu, Rufus Olusola Akinyemi, Chisom Joyqueenet Akunna, Fares Alahdab, Fahad Mashhour Alanezi, Turki M AlanziKefyalew Addis Alene, Robert Kaba Alhassan, Vahid Alipour, Amir Almasi-Hashiani, Nelson Alvis-Guzman, Edward Kwabena Ameyaw, Saeed Amini, Dickson A Amugsi, Robert Ancuceanu, Davood Anvari, Seth Christopher Yaw Appiah, Jalal Arabloo, Olatunde Aremu, Mulusew A Asemahagn, Mohammad Asghari Jafarabadi, Atalel Fentahun Awedew, Beatriz Paulina Ayala Quintanilla, Martin Amogre Ayanore, Yared Asmare Aynalem, Samad Azari, Zelalem Nigussie Azene, B B Darshan, Tesleem Kayode Babalola, Atif Amin Baig, Maciej Banach, Till Winfried Bärnighausen, Arielle Wilder Bell, Akshaya Srikanth Bhagavathula, Mostafa Dianatinasab, Local Burden of Disease sub-Saharan Africa HIV Prevalence Collaborators

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: Human immunodeficiency virus and acquired immune deficiency syndrome (HIV/AIDS) is still among the leading causes of disease burden and mortality in sub-Saharan Africa (SSA), and the world is not on track to meet targets set for ending the epidemic by the Joint United Nations Programme on HIV/AIDS (UNAIDS) and the United Nations Sustainable Development Goals (SDGs). Precise HIV burden information is critical for effective geographic and epidemiological targeting of prevention and treatment interventions. Age- and sex-specific HIV prevalence estimates are widely available at the national level, and region-wide local estimates were recently published for adults overall. We add further dimensionality to previous analyses by estimating HIV prevalence at local scales, stratified into sex-specific 5-year age groups for adults ages 15-59 years across SSA.

METHODS: We analyzed data from 91 seroprevalence surveys and sentinel surveillance among antenatal care clinic (ANC) attendees using model-based geostatistical methods to produce estimates of HIV prevalence across 43 countries in SSA, from years 2000 to 2018, at a 5 × 5-km resolution and presented among second administrative level (typically districts or counties) units.

RESULTS: We found substantial variation in HIV prevalence across localities, ages, and sexes that have been masked in earlier analyses. Within-country variation in prevalence in 2018 was a median 3.5 times greater across ages and sexes, compared to for all adults combined. We note large within-district prevalence differences between age groups: for men, 50% of districts displayed at least a 14-fold difference between age groups with the highest and lowest prevalence, and at least a 9-fold difference for women. Prevalence trends also varied over time; between 2000 and 2018, 70% of all districts saw a reduction in prevalence greater than five percentage points in at least one sex and age group. Meanwhile, over 30% of all districts saw at least a five percentage point prevalence increase in one or more sex and age group.

CONCLUSIONS: As the HIV epidemic persists and evolves in SSA, geographic and demographic shifts in prevention and treatment efforts are necessary. These estimates offer epidemiologically informative detail to better guide more targeted interventions, vital for combating HIV in SSA.

Original languageEnglish
Article number488
Number of pages24
JournalBMC Medicine
Volume20
Issue number1
DOIs
Publication statusPublished - 19 Dec 2022

Keywords

  • Male
  • Female
  • Adult
  • Humans
  • Pregnancy
  • Adolescent
  • Young Adult
  • Middle Aged
  • HIV
  • Acquired Immunodeficiency Syndrome/epidemiology
  • Prevalence
  • Seroepidemiologic Studies
  • HIV Infections/prevention & control
  • Africa South of the Sahara/epidemiology

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