1. Centre for Global Vaccine Research, Institute of Infection and Global Health, University of Liverpool, United Kingdom
2. Malawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi, Blantyre
3. Medical Laboratory Sciences Department, University of Malawi, Blantyre
4. Department of Paediatrics, College of Medicine, University of Malawi, Blantyre
5. International Vaccine Access Center, Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
6. Division of Infection and Immunity, University College London, United Kingdom
7. National Institute for Health Research Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, United Kingdom