1 Postgraduate Training for Applied Epidemiology (PAE), Robert Koch Institute (RKI), Berlin, Germany; ECDC Fellowship Programme, Field Epidemiology Path (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden; Department of Infectious Disease Epidemiology, Robert Koch Institute (RKI), Berlin, Germany. Electronic address: BiallasR@rki.de.
2 Department of Infectious Disease Epidemiology, Robert Koch Institute (RKI), Berlin, Germany.