Abstract
Tick-borne Encephalitis Virus, Zealand, Denmark, 2011
Highlights
In Denmark, tick-borne encephalitis (TBE) has been reported since the 1950s only from the isolated Bornholm Island in the Baltic Sea with an incidence of ≈4 cases per 100,000 persons (2)
None of 58 tick pools from other locations in Denmark or Bornholm were positive for TBE virus (TBEV) but contained other pathogens (6)
Five of the 8 pools obtained from the second flagging session in Tokkekøb were TBEV PCR positive, and 2 yielded isolates (T2, T3) in VeroB4 cell culture
Summary
In Denmark, TBE has been reported since the 1950s only from the isolated Bornholm Island in the Baltic Sea with an incidence of ≈4 cases per 100,000 persons (2). To determine whether TBE was established in this possibly new TBE focus in mainland Denmark outside Bornholm, we collected ticks by flagging (4) from 3 sites at Tokkekøb during June–July 2011. The 3 sites yielded 896 ticks (854 nymphs, 22 male adults, 20 female adults) in 24 pools.
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