1. These authors contributed equally to this article and share first authorship
2. Center for Virology, Medical University of Vienna, Vienna, Austria
3. Viral Zoonoses, Emerging and Vector-Borne Infections Group, Institute of Virology, University of Veterinary Medicine Vienna, Vienna, Austria
4. Austrian Red Cross, Blood Service for Vienna, Lower Austria and Burgenland, Vienna, Austria
5. Department of Medicine IV, Kaiser Franz Josef Hospital, Vienna, Austria
6. German Red Cross, Blood Donor Service Baden-Württemberg-Hessen, Institute for Transfusion Medicine and Immunohaematology, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
7. Department of Basic Medical Sciences, College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates