Roe deer sera used for TBE surveillance in Austria

A large majority of Austrian citizens are aware of tick-borne encephalitis (TBE), consequently reflected by a high vaccination rate of 85%. In return, risk assessment and disease mapping on human cases might be hampered due to high and inhomogeneous vaccination rates and travel habitats of humans. T...

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Bibliographic Details
Published in:Ticks and tick-borne diseases 2015-06, Vol.6 (4), p.489-493
Main Authors: Duscher, Georg Gerhard, Wetscher, Monika, Baumgartner, Raphaela, Walder, Gernot
Format: Article
Language:English
Subjects:
Animals
Antibodies, Viral - blood
Austria
Deer - parasitology
Deer - virology
Encephalitis Viruses, Tick-Borne - immunology
Encephalitis Viruses, Tick-Borne - isolation & purification
Encephalitis, Tick-Borne - blood
Encephalitis, Tick-Borne - veterinary
Encephalitis, Tick-Borne - virology
Female
Humans
Ixodes - virology
Male
Sentinel Surveillance
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Summary:A large majority of Austrian citizens are aware of tick-borne encephalitis (TBE), consequently reflected by a high vaccination rate of 85%. In return, risk assessment and disease mapping on human cases might be hampered due to high and inhomogeneous vaccination rates and travel habitats of humans. The roe deer was used to obtain a starting point for the integral view on the actual risk of TBE in Austria. The roe deer exhibits several attributes which makes it suitable as an indicator species: the roe deer has a restricted home range and it is known to be a heavy tick carrier. Furthermore it sero-converts after infection with TBE, but no outbreak occurs. Sera from 945 roe deer were obtained from all over Austria and screened with IFAT for the antibodies against TBE. Twenty-two positive samples, 2.4%, and 17 samples at the borderline titre of 1:16 were identified. The majority of the positive samples, 70.6%, were located in known TBE areas based on human cases. Further research is needed to confirm or reject new endemic foci of TBE transmission.
ISSN:1877-959X
1877-9603
DOI:10.1016/j.ttbdis.2015.03.018