How does the prevalence of HIV-1 subtypes differ by geographic region?

Updated: Mar 05, 2020
  • Author: Delia M Rivera, MD; Chief Editor: Russell W Steele, MD  more...
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HIV-1 subtypes differ by geographic region. HIV-1 subtype B is predominant in the United States. Non-B subtypes are particularly prevalent in Africa and Asia. The high transmission rate from Africa to Europe has increased the diversity of subtypes in Europe. Non-B subtype HIV-1 infections are increasing in the United States.

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