Claire Thorne is a Professor of Infectious Disease Epidemiology in the Population, Policy and Practice Research and Teaching Department, UCL Institute of Child Health, University College London, UK. Claire’s research has focused on the epidemiology of viral infections with respect to maternal and child health, with a particular emphasis on HIV, viral hepatitis and Zika virus. Claire leads the UK and Ireland National Surveillance of HIV in Pregnancy and Childhood and hepatitis B and C surveillance and cohort studies in the UK and Ukraine, and co-leads the European Pregnancy and Paediatric HIV Cohort Collaboration and PENTAHep (an international paediatric HCV clinical network). She is a Board Member of the Penta Foundation; a member of the Scientific Committee of the Penta ID Network; and an Advisory Board member of the International Antiretroviral Pregnancy Registry. Claire serves on technical working groups for WHO and UNICEF, and is a Member of the Regional Committee for Validation of Elimination of MTCT of HIV and/or syphilis in the WHO Region. She has been a member of the Scientific Committee for the International Workshop on HIV Pediatrics since 2009. Claire is a member of the International Advisory Board of Lancet HIV, Editorial Panel of Journal of Viral Eradication and Editorial Board of HIV Medicine. She teaches on the introduction to epidemiology and the immunisation and infectious diseases modules of the MSc in Paediatrics and Child Health at UCL and has extensive experience of supervising PhD and MSc students.