Which type of HIV virus most commonly causes HIV infection worldwide?

Updated: Mar 05, 2020
  • Author: Delia M Rivera, MD; Chief Editor: Russell W Steele, MD  more...
  • Print

HIV-1 is the most common cause of HIV infection in the Americas, in Europe, in Asia, and in Africa. HIV-1 subtypes differ by geographic region. HIV-1 subtype B is predominant in the United States, though non-B subtype HIV-1 infections are increasing.

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!