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This figure lists in rank order 50 countries that have the highest estimated HIV prevalence rate in the 15-49 year old (most sexually active)* population.  Over 70% of these countries are in sub-Saharan Africa (SSA) and close to 20% are in the Caribbean region and just over 5% are in Asia & Pacific region.  In all of these countries, (except Ukraine which is probably overestimated) there has been extensive (NOT GENERALIZED) heterosexual HIV transmission.  Heterosexual HIV transmission predominates in the Caribbean countries with high HIV prevalence rates and in the three “high” prevalence Asian-Pacific countries also.     
    It should be noted that of the world total of over 160 countries, that more than 100 (more than two-thirds) have estimated national HIV prevalence levels less than 1% and close to half of these latter countries have HIV prevalence about 0.1% (1/1,000 of the 15-49 year old population) or less!
* One of the most important contributions I made to HIV/AIDS epidemiology when I was at GPA/WHO was to change the designation of the 15-49 year old population from "the sexually active age group" to "the most sexually active age group." As an epidemiologist broken down by age and sex (I did not join WHO until I was 55) I could attest to the fact that persons after the age of 50 were still sexually active!