Current Opinion in Allergy and Clinical Immunology was launched in 2001. It is one of a successful series of review journals whose unique format is designed to provide a systematic and critical assessment of the literature as presented in the many primary journals. The fields of allergy and clinical immunology are divided into 14 sections that are reviewed once a year. Each section is assigned a Section Editor, a leading authority in the area, who identifies the most important topics at that time. Here we are pleased to introduce the Journal's Section Editors for this issue. SECTION EDITORS Susan M. TarloSusan M. TarloDr Susan M. Tarlo is a respiratory physician and a Professor in the Department of Medicine at the University of Toronto, Canada, with an academic cross-appointment in the University of Toronto, Dalla Lana Department of Public Health. Her main clinical staff appointment is at the University Health Network, at Toronto Western Hospital, Canada, where she is head of the Occupational Lung Disease Clinic and also has a focus on asthma and allergic respiratory disease. She has research appointments at the Gage Occupational and Environmental Health Unit in Toronto, St Michael's Hospital Li Ka Shing Research Institute and University of Toronto Institute of Medical Science and the Centre for Research Excellence in Occupational Disease at St Michael's Hospital, where she also has an occupational lung specialty clinic. Her research interests and publications are mainly in work-related asthma and occupational allergy. Piero MaestrelliPiero MaestrelliDr Maestrelli, MD, completed his medical degree at University of Padova, Italy, and then specialized in occupational medicine and in pulmonology. He completed a two-year post-doctoral fellowship at the Institute of Occupational Medicine, University of Padova, and then a two-year research fellowship at the Department of Allergy and Clinical Immunology of Cardiothoracic Institute, London, UK. Dr Maestrelli has written over 200 scientific papers and book chapters, and has lectured nationally and internationally. He has been Chairman of the Interest Group on Occupational Allergy of European Academy of Allergology and Clinical Immunology for three years. He has been Professor of Occupational Medicine at University of Padova, Department of Cardiologic-Thoracic-Vascular Sciences and Public Health, Italy, and Director of the Unit of Occupational Medicine at the University Hospital of Padova until 2019. Andy LiuAndy LiuDr Andy Liu is a pediatric allergist and Professor of Pediatrics at the University of Colorado School of Medicine, USA, and The Breathing Institute at Children's Hospital Colorado (CHCO) in Aurora, USA, and Adjunct Professor of Pediatrics at National Jewish Health in Denver, USA. He directs CHCO's Airway Inflammation, Resilience & the Environment (AIRE) Program comprised of an asthma clinical research center and research laboratory. He is a National Institutes of Health-sponsored clinical translational researcher with 25 years of experience investigating childhood asthma, especially its determinants, phenotypes, and mechanisms of disease. His current research includes the development of asthma and determinants of severe, exacerbation-prone asthma in children in US Inner Cities, Indian Nations, and the African diaspora where asthma burdens are high. In multi-disciplinary collaborations with clinical, laboratory, exposure and data scientists, he has conducted team science research to advance asthma understanding and improve management practices for these at-risk children. Dr Liu's recent publications include textbook chapters on childhood asthma in Nelson's Textbook of Pediatrics and Pediatric Allergy: Principles & Practice. He received his undergraduate degree from Harvard College, USA, and his medical degree from the University of Massachusetts Medical School, USA; he completed his residency in pediatrics at the University of Colorado and his allergy & immunology fellowship at National Jewish Health, USA. Pasquale ComberiatiPasquale ComberiatiDr Comberiati is an attending physician in the Paediatric Allergy Section of the University of Pisa, Italy, and an Assistant Professor at the Department of Clinical Immunology and Allergology, IM Sechenov First Moscow State Medical University, Russia. Dr Comberiati is in the leadership of the European Academy of Allergy and Clinical Immunology (EAACI) as he is the current secretary of the JMA Board. Dr Comberiati completed his medical degree at the University of Rome “Sapienza”, Italy. He then completed a five-year residency school in paediatrics at the University of Verona, Italy. He has also done a clinical research fellowship at the Section of Allergy and Immunology of the Children's Hospital Colorado, University of Colorado Denver, USA. Dr Comberiati has lectured nationally and internationally, and his research has been published in numerous peer-reviewed journals, including the Journal of Allergy and Clinical Immunology, the Journal of Allergy and Clinical Immunology in Practice, Allergy, Paediatric Allergy and Immunology, and Immunology and Allergy Clinics of North America. Isabella Annesi-MaesanoIsabella Annesi-MaesanoProf. Isabella Annesi-Maesano holds a permanent joint appointment as Research Director at the French NIH (INSERM) and Professor of Environmental Epidemiology at Sorbonne University in Paris, France. She also serves as the head of the Department of Epidemiology of Allergic and Respiratory diseases (EPAR) (www.epar.fr) at IPLESP INSERM & Sorbonne University in Paris. She is the recipient of many national awards for her research and publications including the FERS award and the 2018 AAAAI Phil and Barbara Liebmann Award. Prof. Annesi-Maesano's research interests include the explanation of the etiopathogenesis of allergic and respiratory diseases and their comorbidities through an exposomic approach presently implemented in the frame of the EU FP7-ENV Health and Environment-wide Associations based on Large Population Surveys (HEALS) project (www.health-eu.eu) of which she is PI. She is or was involved in many other national and international projects as PI or WP leader. Special focus in her research is given to health effects of air pollution, climate change, biodiversity and microbiome impairment. The methods used are borrowed from statistics, epidemiology, multiomics, mathematical modeling and machine learning, which requires the use of data mining. In addition, we contribute to the development of connected objects. Prof. Annesi-Maesano's has served in various leadership positions various international medical societies devoted to fighting allergic and respiratory health, namely ERS, ATS, WAO and EAACI. She has also contributed to Position Papers of these societies on air pollution and climate change. She consults extensively with WHO, European Union and French government on various public health problems. She has served on the editorial boards of numerous medical journal and book series for 20 years. She is the authors of over 400 peer-reviewed papers, reviews and chapters in books. Her H factor is 50 and her work has about 11000 citations. Prof. Annesi-Maesano is a respiratory epidemiologist by training through a PhD, a DSc and a post-doc (Department of Public Health Sciences at St George's Hospital, London, UK) in epidemiology and public health. She graduated in physics (Rome) and medicine (Paris). Antonella CianferoniAntonella CianferoniDr Cianferoni is an Associate Professor of Pediatrics at the University of Pennsylvania, USA, and an attending physician in the allergy and immunology division at the Children's Hospital of Philadelphia, USA. She is an ABAI certified, practicing pediatric allergist with a special clinical and research interest in food allergy and eosinophilic esophagitis, with extensive training in molecular biology and clinical studies. Currently, she splits her time evenly between clinical practice and research activities. Her research has been funded by NIH, APFED, AAAAI/APFED 2015 HOPE/ARTrust, AAAAI, Foederer. Dr Cianferoni is in the leadership of the AAAAI as she is the current BCI secretary, and she is the secretary of the of the working groups for Eosinophilic Esophagitis for the EAACI. She is also the co-director of the FARE center at the Children's Hospital of Philadelphia. Dr Cianferoni graduated from University of Florence's medical school, Italy, where she also obtained her PhD in pediatric immunology. She has completed a residency school in pediatrics at the A Meyer Hospital, University of Florence, and one at the Children's Hospital of Philadelphia. She has also done a research fellowship at Johns Hopkins Allergy and Asthma Center and a clinical allergy and immunology fellowship at the Boston's Children's Hospital, USA. In the past several years, after joining the Allergy and Immunology Faculty in Department of Pediatrics at University of Pennsylvania, Perelman Medical School at the Children's Hospital of Philadelphia in 2007, she has started her laboratory that has focused on understanding how iNKT cells can contribute to food allergy pathogenesis including EoE (Jyonouchi et al JACI 2011, Jyonouchi et al Clinical Experimental allergy) and now has expanded her research to understand the role of conventional and regulatory T cell (Treg) in EoE (Cianferoni et al, Ann Allergy Asthma Immunol. 2018). She is currently coordinating the T cell studies for CEGIR. She contributed to the recent identification of TSLP, EMSY and CAPN14 as a genetic risk factor by Genome Wide Association Studies (Rothenberg M, Spergel JM et al Nature Genetics 2010, Sleiman P et al Nature Communications 2014), and to the characterization of TSLP and EMSY in Eosinophilic esophagitis pathogenesis (Siracusa et al Nature 2011, Noti et al Nature Medicine 2013, Siracusa et la Immunity 2014, Fahey LM et al, Pediatr Allergy Immunol. 2018). She has also studying the genetic risk factors for development of specific subtype of EoE (Fahey LM et al, Clin Transl Gastroenterol. 2018). Dr Cianferoni is also involved in clinical studies and currently she is the PI in the first world study for evaluation of epicutaneous immunotherapy for milk desensitization in children with milk induced EoE (SMILEE, DBV), and the site PI for the study for the development of topical budesonide (SHP621-301, SHIRE). She is also a subinvestigator in many other clinical trials for oral and epicutaneous desensitization (VIPES-DBV, MILES-DBV, ARC-Alloimune, Multifood Xolair). Dr Cianferoni, as post-doctoral fellow at the Hopkins Allergy and Asthma's center first and then Children's Hospital in Boston, worked on transcriptional regulation of IL-4 and IL-2. The results of her research were published in Blood and JACI. She also has clinically characterized several classical allergic diseases such as anaphylaxis, food allergy, hymenoptera venom hypersensitivity, atopic dermatitis, asthma. She has studied extensively anaphylactic reaction in children and adults, and outcome in food challenges in children.