Professor Patrick (Paddy) Mallon is Full Professor of Microbial Diseases in University College Dublin (UCD) and an Infectious Diseases Specialist at St Vincent’s University Hospital, Dublin. He is the director of the UCD Centre for Experimental Pathogen Host Research (CEPHR), which focuses on translational research into outcomes of infections such as HIV, COVID-19 and tuberculosis. He is the National Coordinator for the EU VACCELERATE network that provides a platform for COVID19 vaccine trials in Europe and is Chief Investigator on the international, multicentre BOOSTAVAC trial. His own research interests include age-related outcomes in HIV and host biological determinants of outcome from infection. He is on the governing board of the European AIDS Clinical Society, Head of Education for EACS and is a member of the EACS Comorbidities Guidelines Panel. He is also a member of the COVID19 Advisory Group to the Government of Ireland.