1. Berlin Center for Travel and Tropical Medicine, 10117 Berlin, Germany
2. Department of Laboratory Medicine, Klinikum Würzburg Mitte, Standort Juliusspital, 97070 Würzburg, Germany
3. Medical Faculty, Universitätsmedizin Rostock, 18057 Rostock, Germany
4. Department of Gastroenterology, Hepatology and Infectious Diseases, Otto von Guericke University, 39106 Magdeburg, Germany
5. Seqirus, Clinical Development, Cambridge, MA 02139, USA
6. Seqirus, Clinical Development, 1105 BJ Amsterdam, The Netherlands