1. Wits Reproductive Health and HIV Institute, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
2. European Centre for Disease Prevention and Control, Solna, Sweden
3. Institut Pasteur, Inserm U1117, National Reference Center and WHO Collaborating Center Listeria, Biology of Infection Unit, Paris, France
4. Paris Descartes University, Sorbonne Paris Cité, Necker-Pasteur Infectiology Centre, Necker-Enfants Malades University Hospital, Institut Imagine, Assistance Publique-Hôpitaux de Paris, Paris, France
5. Department of Paediatrics, Division of Paediatric Cardiology, Chris Hani Baragwanath Academic Hospital, Soweto, South Africa
6. School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
7. Reference Microbiology, National Infection Service, Public Health England, UK
8. Crosshouse Hospital, NHS Ayrshire & Arran, UK
9. Epidemiology and Surveillance of Infectious Diseases, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
10. Department of Communicable Diseases and Infection Control, Kalmar County Hospital, Kalmar, Sweden
11. Department of Microbiology, Target Laboratory, Johannesburg, South Africa
12. Department of Opthalmology, Arcispedale S. M. Nuova IRCCS, Reggio Emilia, Italy
13. Department of Clinical and Experimental Medicine, University of Parma, Parma, Italy
14. Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
15. Centre for International Health, Burnet Institute, Melbourne, Australia
16. Immunology Eye Unit, Department of Ophthalmology, Arcispedale S. M. Nuova IRCCS, Reggio Emilia, Italy