Richard Goering, BA MSc PhD, Professor and Chair, Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, Nebraska, USA, Hazel Dockrell, BA (Mod) PhD, Professor of Immunology, Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK, Mark Zuckerman, BSc (Hons) MB BS MRCP MSc FRCPath, Consultant Virologist and Honorary Senior Lecturer, South London Specialist Virology Centre, King’s College Hospital NHS Foundation Trust, King’s College London School of Medicine, London, UK and Peter L. Chiodini, BSc, MBBS, PhD, MRCS, FRCP, FRCPath, FFTMRCPS(Glas), Honorary Professor, The London School of Hygiene and Tropical Medicine, Infectious & Tropical Diseases; Consultant Parasitologist, Hospital for Tropical Diseases, Department of Clinical Parasitology, London England UK