Tick-borne encephalitis - Annual Epidemiological Report for 2021

Surveillance report

17 Apr 2024

Publication series: Annual Epidemiological Report

Time period covered: This report is based on data for 2021 retrieved from The European Surveillance System (TESSy) on 25 October 2022.

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For 2021, there were 3 027 tick-borne encephalitis (TBE) cases reported from 25 EU/EEA countries, 2 949 (97.4%) of which were confirmed.

The EU/EEA notification rate for 2021 was 0.71 per 100 000 population, which is a slight decrease compared with the results from 2020.

Cases were more frequently reported among men (male-to-female ratio: 1.5:1) and in the age group 45–64 years.

Tick-borne encephalitis presented a seasonal pattern. For 2021, 90% of confirmed cases occurred between June and November in the EU/EEA, with July being the month with the highest number of reported cases (n=717).