1. Department of Infectious Disease Epidemiology, National Center for Epidemiology, Budapest, Hungary
2. European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
3. National Reference Laboratory for Viral Zoonoses, National Center for Epidemiology, Budapest, Hungary
4. Körmendi, Őriszentpéteri, Szentgotthárdi, Vasvári Public Health Institute Service; Policy administration service of public health, Vas County Government Office, Körmend, Hungary