Severe Dengue Virus Infection in Travelers: Risk Factors and Laboratory Indicators

Ole Wichmann, Joaquim Gascon, Mirjam Schunk, Sabino Puente, Heli Siikamaki, Ida Gjorup, Rogelio Lopez-Velez, Joannes Clerinx, Gabriele Peyerl-Hoffmann, Anders Sundoy, Blaise Genton, Peter Kern, Guido Calleri, Miguel de Gorgolas, Nikolai Muhlberger, and Tomas Jelinek, for the European Network on Surveillance of Imported Infectious Diseases Institute of Tropical Medicine, Charite University Medicine, Berlin Center for Travel and Tropical Medicine, and Department for Infectious Disease Epidemiology, Robert Koch Institute, Berlin; Department of Infectious Diseases and Tropical Medicine, University of Munich, Munich, Infectious Disease Clinic, Abteilung Innere Medizin II, University of Freiburg, Freiburg, and Sektion Infektiologie und Klinische Immunologie, University of Ulm, Ulm, Germany; Centre Salut Internacional, Institut d’Investigacions Biomediques August Pi i Sunyer, Hospital Clinic Barcelona, and Department of Infectious Diseases and Tropical Medicine, Hospital Carlos III, Tropical Medicine and Clinical Parasitology Unit, Infectious Diseases–Microbiology Department, Hospital Ramon y Cajal, and Fundacion Jimenez Diaz, Division of Infectious Disease, Madrid, Spain; Helsinki University Central Hospital, Department of Medicine, Division of Infectious Diseases, Helsinki, Finland; Rigshospitalet Copenhagen, University of Copenhagen, Denmark; Prins Leopold Instituut voor Tropische Geneskunde, Clinical Services, Antwerp, Belgium; Sorlandet Hospital, Kristiansand, Norway; Travel Clinic at the Policlinique Medicale Universitaire, University of Lausanne, Lausanne, Switzerland; Division “A” Malattie Infettive, Ospedale Amedeo di Savoia, Torino, Italy