UK Health Security Agency
Guidance: Tick-borne encephalitis: epidemiology, diagnosis and prevention
Advice for health professionals on tick-borne encephalitis (TBE) including symptoms, diagnosis and epidemiology.
Until 2019, the UK was assessed to be free of TBE virus. In 2019, TBE virus was detected in ticks in various regions of the UK, in the Thetford Forest (north of Suffolk, northeast of London), in an area on the border between Hampshire and Dorset (Southwest England), and in North Yorkshire (Northeast England) (see Snapshot week 41/2019).
The first TBE virus infection in a human occurred in the New Forest area (South England, about 30 miles south of London) in 2019 (see Newsletter December 2019).
In July 2020, a second TBE case was reported in Hampshire (South England) (see Snapshot week 24/2022).
In September 2022, a third TBE case was diagnosed in an individual who most likely acquired the infection in the Loch Earn area of Scotland.
In October 2022, a fourth TBE case was diagnosed in a person who reported recent exposure to ticks in the North Yorkshire Moors in Northeast England.
These results indicate that the risk to acquire TBE in the United Kingdom is not only limited to a small area but is more widespread from South England to Scotland.