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)


  • Heterosexual intercourse is the primary mode of HIV transmission in African nations (Table 2)[UNAIDS 2013]
  • Most new infections in this region occur in young adults (aged 15-24 years), particularly women

  • Some epidemics are declining or have stabilized (eg, Zimbabwe, Botswana, Malawi, Zambia, South Africa, and Uganda), although HIV prevalence in Lesotho and Rwanda appears to be increasing

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