Affiliation: | aInstitute for Virology, Philipps University Marburg, Marburg, Germany;bSpecial Pathogens Branch, Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA;cPublic Health Agency of Sweden, Stockholm, Sweden;dNational Veterinary Institute, Uppsala, Sweden;eDepartment of Clinical Microbiology, LABMED, Karolinska Institute, Stockholm, Sweden |