PSMG Virtual Grand Rounds next Tuesday (10/03/17) with CDC's Anna Satcher-Johnson & Ruiguang Song

Join us next Tuesday, October 3rd from 12pm - 1:30pm CT for Anna Satcher-Johnson and Ruiguang Song of the CDC for their presentation and discussion on Estimating HIV incidence, prevalence, and undiagnosed infection in the United States.

Anna Satcher-Johnson, MPH
United States Public Health Service
Centers for Disease Control & Prevention
University of Birmingham

Ruiguang Song, Ph.D.
Mathematical Statistician
Centers for Disease Control and Prevention
University of Cincinnati


The burden of HIV infection and health outcomes for people living with HIV varies across the United States. New methods allow for estimating national and state-level HIV incidence, prevalence, and undiagnosed infections using surveillance data and CD4 values.

Methods: HIV surveillance data reported to the Centers for Disease Control and Prevention and the first CD4 value after diagnosis were used to estimate the distribution of delay from infection to diagnosis based on a well-characterized CD4 depletion model. This distribution was used to estimate HIV incidence, prevalence, and undiagnosed infections during 2010–2014. Estimated annual percentage changes were calculated to assess trends.

During 2010–2014, HIV incidence decreased 10.3% (EAPC = -3.1%) and the percentage of undiagnosed infection decreased from 17.1% to 15.0% (EAPC = -3.3%) in the United States; HIV prevalence increased 9.1% (EAPC = 2.2%). In 2014, Southern states accounted for 50% of both new HIV infections and undiagnosed infections. HIV incidence and undiagnosed infection decreased in the United States during 2010–2014; however, outcomes varied by state and region. Progress in national HIV prevention is encouraging but intensified efforts for testing and treatment are needed in the South and states with high percentages of undiagnosed infection.


Ce-PIM‘s Prevention Science and Methodology Group (PSMG) is a virtual network of more than 480 empirical researchers and methodologists aimed to advance the field of prevention science and support the implementation of evidence-based prevention programs. The PSMG grand rounds are now conducted virtually over the internet, allowing the members to view, question, and comment live from their own computer with leading scientists and methodologists at no cost. Access to live presentations is restricted to PSMG members. However, PSMG presentations are recorded and will be publicly accessible on our website two weeks after the presentation date on the archive page.

The PSMG will host sessions devoted specifically to HIV Prevention (chaired by Nanette Benbow and Gregory Phillips) as well as Implementation Science (chaired by J D Smith), Agent-Based Modeling (chaired by Wouter Vermeer), and Innovations in Research Designs (chaired by Booil Jo).

View the full presentation schedule here and become a PSGM member here today.