1. Institute of Immunology, Laboratoire National de Santé/Centre de Recherche Public-Santé, Luxembourg, Luxembourg
2. National Center of Infectious & Parasitic Diseases, Department of Virology, Measles/Rubella Laboratory, Sofia, Bulgaria
3. Laboratory of Medical Microbiology, Institut Pasteur Hellenique, Athens, Greece
4. Division of Microbiology, Laboratoire National de Santé, Luxembourg, Luxembourg
5. Central Virology Laboratory, Sheba Medical Center, Ramat Gan, Israel
6. National Virological Laboratory, Department of the State Sanitary and Epidemiological Surveillance, Ministry of Health of Kyrgyz Republic, Bishkek, Kyrgyzstan
7. Central Laboratory of Communicable Diseases, Health Protection Inspectorate, Tallinn, Estonia
8. Respiratory Department, TORLAK Institute of Immunology and Virology, Belgrade, Serbia
9. Institut de Recherche en Sciences de la Santé, Bobo-Dioulasso, Burkina Faso
10. Gabrichevsky G.N. Research Institute of Epidemiology and Microbiology, Moscow, Russian Federation
11. Measles/Rubella Group, National Center for Disease Control and Public Health, Tbilisi, Georgia
12. Virology Laboratory, Innovative Biotech-Keffi No. 1, Keffi, Nasarawa State, Nigeria
13. Department of Virology, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
14. Department of Medicine, University College Hospital & University of Ibadan, Ibadan, Nigeria