1. Center for Communicable Disease Dynamics, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA, USA
2. WHO Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at London School of Hygiene and Tropical Medicine, P.O. Box 273, Banjul, The Gambia
3. Hopital d’Enfants Albert Royer, BP 5297, Fann, Dakar, Senegal
4. Hospital National Niamey, BP 238, Niamey, Niger
5. Borgou Regional University Teaching Hospital, Parakou, Benin
6. Department of Mother and Child, Faculty of Medicine, University of Parakou, Parakou, Benin
7. Laboratoire Microbiologie, Centre Hospitalier Universitaire de Tokoin Lomé, BP 57, Lomé, Togo
8. Central Laboratory Services, Korle-Bu Teaching Hospital, P.O. Box 77, Accra, Ghana
9. Komfo Anokye Teaching Hospital, P.O. Box 1934, Kumasi, Ghana
10. Edward Francis Small Teaching Hospital, Banjul, The Gambia
11. Laboratoire Central du CHU de Yopougon, Institut Pasteur de Cote d'Ivoire, Abidjan, Ivory Coast
12. Centre Mere et Enfant de la Fondation, Chantal Biya, Yaounde, Cameroon
13. Institut National de Recherche Biomedicale, Kinshasa, Democratic Republic of Congo
14. Parasites and Microbes, Wellcome Sanger Institute, Hinxton, UK
15. Centers for Disease Control and Prevention, Atlanta, GA, USA
16. Rollins School of Public Health, Emory University, Atlanta, GA, USA
17. Emory Global Health Institute, Atlanta, GA, USA
18. World Health Organization Regional Office for Africa, BP 6, Brazzaville, Republic of Congo
19. NIHR Global Health Research Unit on Mucosal Pathogens, Division of Infection and Immunity, University College London, London, UK