Temporal Trends in Age at HIV Diagnosis in Cohorts in the United States, the Caribbean, and Central and South America

AIDS Behav. 2015 Sep;19(9):1599-608. doi: 10.1007/s10461-014-0974-x.


In the United States (USA), the age of those newly diagnosed with HIV is changing, particularly among men who have sex with men (MSM). A retrospective analysis included HIV-infected adults from seven sites in the Caribbean, Central and South America network (CCASAnet) and the Vanderbilt Comprehensive Care Clinic (VCCC-Nashville, Tennessee, USA). We estimated the proportion of patients <25 years at HIV diagnosis by calendar year among the general population and MSM. 19,466 (CCASAnet) and 3,746 (VCCC) patients were included. The proportion <25 years at diagnosis in VCCC increased over time for both the general population and MSM (p < 0.001). Only in the Chilean site for the general population and the Brazilian site for MSM were similar trends seen. Subjects <25 years of age at diagnosis were less likely to be immunocompromised at enrollment at both the VCCC and CCASAnet. Recent trends in the USA of greater numbers of newly diagnosed young patients were not consistently observed in Latin America and the Caribbean. Prevention efforts tailored to young adults should be increased.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Adult
  • Age Factors*
  • Ambulatory Care Facilities
  • Caribbean Region / epidemiology
  • Central America / epidemiology
  • Female
  • HIV Infections / diagnosis*
  • HIV Infections / epidemiology
  • Homosexuality, Male / psychology
  • Homosexuality, Male / statistics & numerical data*
  • Humans
  • Male
  • Middle Aged
  • Population Surveillance / methods*
  • Retrospective Studies
  • Risk Factors
  • South America / epidemiology
  • Tennessee / epidemiology
  • United States / epidemiology
  • Young Adult