Prof Margaret Hellard (MH) is the Head of the Centre for Population Health at the Burnet Institute in Melbourne and Head of Hepatitis Services in the Infectious Diseases Unit at The Alfred Hospital. Margaret’s principal research interests are in preventing the transmission of blood borne viruses (HIV, HBV and HCV) and sexually transmitted infections and improving the management of individuals already infected. She has considerable experience in undertaking community based research involving people who inject drugs (PWID), men who have sex with men, prisoners, young people and other vulnerable populations. Margaret takes a multidisciplinary approach to her research, working with clinicians, epidemiologists, qualitative and ethnographic researchers, mathematical modellers, social network modellers, virologists and immunologists to solve complex health problems.