Childhood, adolescent, and young adult (CAYA) cancer survivors may be at risk for a severe course of COVID-19. Little is known about the clinical course of COVID-19 in CAYA cancer survivors, or if additional preventive measures are warranted. We established a working group within the International Late Effects of Childhood Cancer Guideline Harmonization Group (IGHG) to summarize existing evidence and worldwide recommendations regarding evidence about factors/conditions associated with risk for a severe course of COVID-19 in CAYA cancer survivors, and to develop a consensus statement to provide guidance for healthcare practitioners and CAYA cancer survivors regarding COVID-19.

Amsterdam University Medical Center Department of Pediatrics Amsterdam the Netherlands

Childhood Cancer Registry Institute for Social and Preventive Medicine University of Bern Bern Switzerland

Cochrane Childhood Cancer Amsterdam the Netherlands

Department for Pediatric Hematology and Oncology CHU Nord University Hospital Saint Etienne Saint Priest en Jarez France

Department for Pediatric Hematology and Oncology University Hospital Bonn Bonn Germany

Department of Epidemiology and Cancer Control St Jude Children's Research Hospital Memphis Tennessee USA

Department of Health Sciences and Medicine University of Lucerne Lucerne Switzerland

Department of Infectious Diseases Peter MacCallum Cancer Centre and Royal Children's Hospital Parkville Victoria Australia

Department of Malignant Haematology Great Ormond Street Hospital for Children NHS Trust London UK

Department of Oncology Division of Psychosocial Oncology University of Calgary Calgary AB Canada

Department of Oncology St Jude Children's Research Hospital Memphis Tennessee USA

Department of Paediatric and Adolescent Haematology Oncology Great North Children's Hospital and Clinical and Translational Research Institute Newcastle University Centre for Cancer Newcastle University Newcastle upon Tyne UK

Department of Paediatric Oncology Leeds Teaching Hospitals NHS Trust and Leeds Institute of Medical Research University of Leeds Leeds LS2 9JT UK

Department of Pediatric Hematology and Oncology University Hospitals Leuven Leuven Belgium

Department of Pediatric Hematology Oncology Okinawa Prefectural Nanbu Medical Center and Children's Medical Center Okinawa Japan

Department of Pediatric Oncology University of Groningen University Medical Center Groningen Groningen the Netherlands

Department of Pediatrics Nippon Medical School Tokyo Japan

Department of Population Sciences City of Hope National Medical Center Duarte California USA

Division of Haematology Oncology The Hospital for Sick Children Toronto Canada

Dutch Childhood Cancer Parent Organization VOKK Netherlands Department VOX Survivors Nieuwegein the Netherlands

Emory University School of Medicine Aflac Cancer and Blood Disorders Center Atlanta Georgia USA

Epidemiology and Biostatistics Unit and DOPO clinic IRCCS Istituto Giannina Gaslini Genova Italy

Epidemiology and Biostatistics Unit and DOPO Clinic IRCCS Istituto Giannina Gaslini Genova Italy

Epidemiology of Childhood and Adolescent Cancers CRESS INSERM UMR 1153 Paris Descartes University Villejuif France

Infectious Disease Research Program Center for Bone Marrow Transplantation and Department of Pediatric Hematology Oncology University Children's Hospital Münster Germany

Infectious Diseases Unit IRCCS Istituto Giannina Gaslini Genova Italy

Institute for Endocrinology and Diabetes University of Luebeck Ratzeburger Allee 160 Luebeck 23562 Germany

Kepler University Clinic Med Campus 4 Linz Austria

Lund University Skane University Hospital Department of Clinical Sciences Lund Pediatrics Lund Sweden

Murdoch Children's Research Institute Parkville Victoria Australia

NHMRC National Centre for Infections in Cancer Sir Peter MacCallum Department of Oncology University of Melbourne Parkville Victoria Australia

Princess Máxima Center for Pediatric Oncology Utrecht the Netherlands

Rutgers Cancer Institute of New Jersey The State University of New Jersey New Brunswick New Jersey USA

St Anna Childrens Hospital Vienna Austria

St Luke's International University Tokyo Japan

The Hospital for Sick Children Toronto Canada

University Hospital Brno and St Anna University Hospital ICRC Masaryk University Brno Czech Republic

University Hospital for Children and Adolescents Pediatric Oncology and Hematology Ratzeburger Allee 160 Luebeck 23562 Germany

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