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Global, Regional, and National Burden of Hiv/Aids, 1990–2021, and Forecasts to 2050, for 204 Countries and Territories: The Global Burden of Disease Study 2021 Publisher Pubmed



Carter A ; Walters MK ; Jahagirdar D ; Brewer ED ; Novotney A ; Lasher D ; Vongpradith A ; He J ; Byrne S ; Dominguez RMV ; Pease SA ; Comfort H ; May EA ; Burkart K Show All Authors
Authors
  1. Carter A
  2. Walters MK
  3. Jahagirdar D
  4. Brewer ED
  5. Novotney A
  6. Lasher D
  7. Vongpradith A
  8. He J
  9. Byrne S
  10. Dominguez RMV
  11. Pease SA
  12. Comfort H
  13. May EA
  14. Burkart K
  15. Dai X
  16. Degenhardt L
  17. Ikuta KS
  18. Kassel MB
  19. Legrand KE
  20. Lim SS
  21. Mckowen AW
  22. Mestrovic T
  23. Mokdad AH
  24. Mougin V
  25. Pasovic M
  26. Rafferty Q
  27. Reiner Rc JR
  28. Smith AE
  29. Sorensen RJD
  30. Vo AT
  31. Vos T
  32. Zhang M
  33. Zheng P
  34. Aravkin AY
  35. Imaieaton JW
  36. Naghavi M
  37. Schumacher AE
  38. Hay SI
  39. Murray CJL
  40. Kyu HH
  41. Tram K
  42. Mpolya EA
  43. Sartorius B
  44. Ma J
  45. Verma M
  46. Frank TD
  47. Lin C
  48. Abate YH
  49. Abbastabar H
  50. Bastan M
  51. Rahmani S
  52. Rashidi M
  53. Behnoush A
  54. Dadras O
  55. Eskandarieh S
  56. Adli AH
  57. Rad EM
  58. Mansournia M
  59. Najafi M
  60. Rahimimovaghar A
  61. Rahimimovaghar V
  62. Sharifan A
  63. Shirkoohi R
  64. Abdelkader A
  65. Alalalmeh SO
  66. Hegazi OE
  67. Shamsi A
  68. Zyoud SH
  69. Abdi P
  70. Abdoun M
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  73. Zoladl M
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Source: The Lancet HIV Published:2024


Abstract

Background: As set out in Sustainable Development Goal 3.3, the target date for ending the HIV epidemic as a public health threat is 2030. Therefore, there is a crucial need to evaluate current epidemiological trends and monitor global progress towards HIV incidence and mortality reduction goals. In this analysis, we assess the current burden of HIV in 204 countries and territories and forecast HIV incidence, prevalence, and mortality up to 2050 to allow countries to plan for a sustained response with an increasing number of people living with HIV globally. Methods: We used the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021 analytical framework to compute age-sex-specific HIV mortality, incidence, and prevalence estimates for 204 countries and territories (1990–2021). We aimed to analyse all available data sources, including data on the provision of HIV programmes reported to UNAIDS, published literature on mortality among people on antiretroviral therapy (ART) identified by a systematic review, household surveys, sentinel surveillance antenatal care clinic data, vital registration data, and country-level case report data. We calibrated a mechanistic simulation of HIV infection and natural history to available data to estimate HIV burden from 1990 to 2021 and generated forecasts to 2050 through projection of all simulation inputs into the future. Historical outcomes (1990–2021) were simulated at the 1000-draw level to support propagation of uncertainty and reporting of uncertainty intervals (UIs). Our approach to forecasting utilised the transmission rate as the basis for projection, along with new rate-of-change projections of ART coverage. Additionally, we introduced two new metrics to our reporting: prevalence of unsuppressed viraemia (PUV), which represents the proportion of the population without a suppressed level of HIV (viral load <1000 copies per mL), and period lifetime probability of HIV acquisition, which quantifies the hypothetical probability of acquiring HIV for a synthetic cohort, a simulated population that is aged from birth to death through the set of age-specific incidence rates of a given time period. Findings: Global new HIV infections decreased by 21·9% (95% UI 13·1–28·8) between 2010 and 2021, from 2·11 million (2·02–2·25) in 2010 to 1·65 million (1·48–1·82) in 2021. HIV-related deaths decreased by 39·7% (33·7–44·5), from 1·19 million (1·07–1·37) in 2010 to 718 000 (669 000–785 000) in 2021. The largest declines in both HIV incidence and mortality were in sub-Saharan Africa and south Asia. However, super-regions including central Europe, eastern Europe, and central Asia, and north Africa and the Middle East experienced increasing HIV incidence and mortality rates. The number of people living with HIV reached 40·0 million (38·0–42·4) in 2021, an increase from 29·5 million (28·1–31·0) in 2010. The lifetime probability of HIV acquisition remains highest in the sub-Saharan Africa super-region, where it declined from its 1995 peak of 21·8% (20·1–24·2) to 8·7% (7·5–10·7) in 2021. Four of the seven GBD super-regions had a lifetime probability of less than 1% in 2021. In 2021, sub-Saharan Africa had the highest PUV of 999·9 (857·4–1154·2) per 100 000 population, but this was a 64·5% (58·8–69·4) reduction in PUV from 2003 to 2021. In the same period, PUV increased in central Europe, eastern Europe, and central Asia by 116·1% (8·0–218·2). Our forecasts predict a continued global decline in HIV incidence and mortality, with the number of people living with HIV peaking at 44·4 million (40·7–49·8) by 2039, followed by a gradual decrease. In 2025, we projected 1·43 million (1·29–1·59) new HIV infections and 615 000 (567 000–680 000) HIV-related deaths, suggesting that the interim 2025 targets for reducing these figures are unlikely to be achieved. Furthermore, our forecasted results indicate that few countries will meet the 2030 target for reducing HIV incidence and HIV-related deaths by 90% from 2010 levels. Interpretation: Our forecasts indicate that continuation of current levels of HIV control are not likely to attain ambitious incidence and mortality reduction targets by 2030, and more than 40 million people globally will continue to require lifelong ART for decades into the future. The global community will need to show sustained and substantive efforts to make the progress needed to reach and sustain the end of AIDS as a public threat. Funding: The Bill & Melinda Gates Foundation and the National Institute of Allergy and Infectious Diseases. © 2024 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license
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