"Although there are fast-growing HIV epidemics across central Asia, Uzbekistan has the largest number of people with HIV and is experiencing a particularly deteriorating situation (table 2).1,16,21–23 The number of people newly diagnosed with HIV has increased more than 11 times in Uzbekistan between 2001 and 2006 compared with four times in Kyrgyzstan and Tajikistan.24 Young people have been most affected by the HIV epidemic: in Uzbekistan 8413 (64%) of 13,146 cumulative HIV cases have been among people aged 34 years or younger,25 in Kyrgyzstan 773 (57%) of 1357 cases are in those younger than 30 years,26 and in Kazakhstan 891 (45%) of 1979 cases registered in 2007 were in the 20–29 year age group.27 The predominant HIV genetic subtype in central Asia is subtype A, as it is in eastern Europe, distinguishing the epidemic in this sub-region from that in western Europe, where subtype B predominates.28–30"

Source

Claire Thorne, et al., "Central Asia: Hotspot in the Worldwide HIV Epidemic," The Lancet Infectious Diseases, 2010 Jul;10(7):479-88. doi: 10.1016/S1473-3099(10)70118-3