Why is tick-borne encephalitis increasing? A review of the key factors causing the increasing incidence of human TBE in Sweden

Thomas G. T. Jaenson1, Marika Hjertqvist2, Tomas Bergström3, Åke Lundkvist2
1Medical Entomology Unit, Department of Systematic Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18d, Uppsala, SE-752 36, Sweden
2Department for Analysis and Prevention, Swedish Institute for Communicable Disease Control, SMI, Stockholm, Sweden
3Department of Infectious Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden

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