Nikolaos (Nikos) Papadopoulos is a world leading expert in allergy and asthma, focusing on the role of infection and its interaction with atopy, as keystone events of allergy pathophysiology as well as targets for treatment. During his career, he has identified some of the key mechanisms leading from common viral exposures to asthma exacerbations and persistence. He is Professor of Allergy & Pediatric Allergy at the University of Athens; also Honorary Professor at the University of Manchester and at OPRI, Singapore. He has supervised >20 PhDs, organized >100 educational events and is invited speaker >30 times a year. He has participated and led high-impact EU research projects from FP5 to Horizon Europe and has actively served many international societies, notably EAACI (President 2013-15, during which he worked towards the creation of the EU Parliament Interest Group on Allergy & Asthma) and REG (President 2018-20). He has received several international awards, has published >500 papers (>45000 citations, h-index:96, Google Scholar). He is Editor-in-Chief of Frontiers in Allergy and Associate Editor of Clinical & Translational Allergy. He is the leader of PeARL (Pediatric Asthma in Real-Life), a think tank aiming to optimise pediatric asthma management.