1. Department of Immunization, Vaccines and Biologicals, World Health Organization, Geneva, Switzerland
2. Division of Bacterial Diseases, US Centers for Disease Control and Prevention, Global Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, National Center for Immunization and Respiratory Disease, Atlanta, Georgia, USA
3. Department of Vaccine Preventable Diseases Program, World Health Organization Regional Office for Africa, Brazzaville, Congo Republic
4. Department of Immunization, Vaccines and Biologicals, World Health Organization Regional Office for Africa, Inter-Support Team for East and South Africa, Harare, Zimbabwe
5. Department of Vaccine Preventable Diseases, World Health Organization Regional Office for Africa, Inter-Support Team for West Africa, Ouagadougou, Burkina Faso
6. Department of Communicable Diseases, Immunization, Vaccines and Biologicals Unit, World Health Organization Eastern Mediterranean Office, Cairo, Egypt
7. Division of Country Health Programmes, Vaccine-Preventable Diseases and Immunization Unit, World Health Organization European Regional Office, Copenhagen, Denmark
8. Pan American Health Organization/Department of Family, Health Promotion, and Life Course, World Health Organization Regional Office for the Americas, Comprehensive Family Immunization Unit, Washington DC, USA
9. Department of Immunization and Vaccine Development, World Health Organization South-East Asia Regional Office, New Delhi, India
10. Division of Programmes for Diseases Control, Vaccine Preventable Diseases and Immunization, World Health Organization Western Pacific Regional Office, Manila, Philippines
11. Division of the National Health Laboratory Service, National Institute for Communicable Diseases, African Regional Reference Laboratory For The WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Centre for Respiratory Diseases and Meningitis, Johannesburg, South Africa
12. University of the Witwatersrand, School of Pathology, Faculty of Health Sciences, Johannesburg, South Africa
13. Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, WHO Collaborating Centre for New Vaccines Surveillance and African Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Fajara, Banjul, The Gambia
14. Department of Clinical Bacteriology Development, Central Public Health Laboratories, Eastern Mediterranean Region Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Cairo, Egypt
15. G.N. Gabrichevsky Research Institute for Epidemiology and Microbiology, Laboratory of Clinical Microbiology and Biotechnology, European Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Moscow, Russian Federation
16. Instituto Nacional de Salud, Dirección de Redes en Salud Pública, Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Bogotá, D.C., Colombia
17. Department of Clinical Microbiology, Christian Medical College and Hospital, South-East Asia Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Vellore, Tamil Nadu, India
18. Department of Microbiology, Bangladesh Institute of Child Health and Child Health Research Foundation, South-East Asia Region National Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Dhaka, Bangladesh
19. The Peter Doherty Institute for Infection and Immunity, Microbiological Diagnostic Unit Public Health Laboratory, Western Pacific Region Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Melbourne, Australia
20. Division of Bacterial Disease, Korea Disease Control and Prevention Agency, Western Pacific Region Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Cheongju-Si, Chungcheongbuk-do, Republic of Korea
21. Division of Tuberculosis and Bacterial Respiratory Infections, Korea Disease Control and Prevention Agency, Western Pacific Region Regional Reference Laboratory for the WHO-coordinated Invasive Bacterial Vaccine Preventable Disease Surveillance Network, Cheongju-Si, Chungcheongbuk-do, Republic of Korea
22. Public Health England, Respiratory and Vaccine Preventable Bacteria Reference Unit, WHO Collaborating Center for Haemophilius and Streptococcus pneumoniae, London, United Kingdom
23. Public Health England, United Kingdom National External Quality Assessment Services, London, United Kingdom