Sexual Networks and the Potential for Spread of HIV/STDs in China • Giovanna Merli, Duke University ; Feng Tian, University of Wisconsin at Madison

HIV Serosorting among Men Who Have Sex with Men: Population-Level Impacts of Partner Selection and Sexual Behavior • Susan L. Cassels, University of Washington ; Timothy W. Menza, University of Washington ; Steven M. Goodreau, University of Washington

Ethnic Identity, Strategic Cross-Ethnic Sexual Network Formation and HIV/AIDS in Africa • Roland Pongou, Brown University

Selective Mixing Based on HIV Status in Sub-Saharan Populations? Some Indirect Evidence from Demographic and Health Surveys and Implications for HIV Prevention • Stephane Helleringer, Columbia University ; Georges Reniers, Princeton University