Report of the 20th annual meeting of the International Scientific Working Group on Tick-Borne Encephalitis (ISW-TBE): ISW-TBE: 20 years of commitment and still challenges ahead.

The 20th Meeting of the International Scientific Working Group on Tick-Borne Encephalitis (ISW-TBE) - a group of neurologists, general practitioners, clinicians, travel physicians, virologists, pediatricians, ecologists, and epidemiologists - was held under the theme "ISW-TBE: 20 years of commitment & still challenges ahead". On the occasion of the 20th anniversary of the ISW-TBE several key topics in TBE were extensively discussed, among them current epidemiological developments and investigations, expansion of risk areas, clinical aspects and cases, traveling and mobility, and latest news on TBE vaccination. The main goals that have been achieved by the ISW-TBE so far are, among others, an increased awareness in endemic and non-endemic countries, an increase of vaccination rates in various countries, getting TBE acknowledged and established as a travel-related risk, and building contact with the European Centre for Disease Prevention and Control.