Epidemiology of HIV Infection in the Developing World

  • Authors: Sunil Solomon, MBBS, PhD, MPH; Suniti Solomon, MD (More Info)
  • Editors in Chief: Daniel R. Kuritzkes, MD; Joseph J. Eron, Jr., MD
  • Last Reviewed: 4/1/16 (What's New)


  • First cases of AIDS were reported in 1981, and HIV was identified as the etiologic agent in 1983[CDC 1981; Barré-Sinoussi 1983; Gallo 1984]
  • UNAIDS estimated 36.9 million people were living with HIV worldwide in 2014 (Figure 1), including 2.6 million children younger than 15 years[UNAIDS 2014]
  • Approximately 70% of all HIV-infected people live in sub-Saharan Africa,[UNAIDS 2014] and 95% of new HIV infections occur in the developing world[AIDS.gov]

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