Percentage of HIV infectors and who progressed to AIDS, Wuhan, China.

Data reported to Centers for Disease Control and Prevention from 1994 to February 29, 2012. *The youngest person who met the inclusion criteria was 17 years old. **≤Primary: illiterate or primary school, Secondary: middle school, high school or technical secondary school. MSM = men who had sex with men; IDU = injection drug user; HC = heterosexual contact with a high-risk individual or person with HIV infection or AIDS; Blood = blood transfusion or blood products; AIDS = acquired immunodeficiency syndrome; HIV = human immunodeficiency virus; CI = confidence interval.