Figure 3

Each black dot on the maps represents a locality where one or more persons are presumed to have contracted the TBE virus infection. The left map (a) shows the probable places of infection of all domestic TBE cases (n = 236) recorded by SMI during the 5-year period 1987–1991. The central map (b) shows the corresponding data 20 years later, i.e. all domestic TBE cases (n = 940) recorded during 2007–2011. Each black dot on the right map (c) represents a locality where one or more persons (N = 2550 human TBE cases) are presumed to have contracted the TBE virus infection during the period 1986–2011.