Professor Khoshnood is trained as an infectious disease epidemiologist and his primary research interests are the epidemiology, prevention and control of HIV/AIDS and tuberculosis among drug users, prisoners and other at risk populations in United States and in resource-poor countries. Professor Khoshnood's other interests are the examination of the links among health, human rights and violent conflict and ethical dilemmas in research involving vulnerable populations. Professor Khoshnood conducts research in U.S, China and the Middle East and teaches courses on HIV/AIDS, global health and research methods and ethics.