Professor Patrick (Paddy) Mallon is Professor of Microbial Diseases in the UCD School of Medicine and a Consultant in Infectious Diseases in St Vincent's University Hospital in Dublin. He graduated in Medicine from Queen's University Belfast, Northern Ireland and undertook subsequent clinical training in infectious disease medicine in Sydney, Australia where he completed a PhD in long-term toxicities in HIV.

Professor Mallon returned to Ireland in 2007 and has led the development of an active research programme in Infectious Diseases. In 2008 he established the HIV Molecular Research Group, which focuses on translational research into toxicities of antiretroviral therapy, strategies to increase population HIV testing and studies aimed at better understanding immune responses to antiretroviral treatment.

Professor Mallon is a past-president of the Infectious Diseases Society of Ireland, a regional representative for the European AIDS Clinical Society and the incoming Chair of the co-morbidities Guidelines Panel of the European AIDS Clinical Society. Professor Mallon is also the Director of the Wellcome-Health Research Board Irish Clinical Academic Training Programme.

Prof Mallon has served as Associate Dean for Research and Innovation, driving the School's translational research strategy, developing research capacity, and creating a support infrastructure for UCD Medicine investigators. In July 2018, Prof Mallon was appointed UCD Full Professor of Microbial Diseases and consultant in infectious disease at St Vincent's University Hospital.