2023: The Year of Record-Breaking Tick-Borne Encephalitis Cases in Finland as Ticks Move Northward

In 2023, Finland experienced a record-breaking number of cases of tick-borne encephalitis (TBE), with ticks being found further north than they were 50 years ago. A study conducted by the University of Turku revealed an increase in tick observations, which is believed to be due to the warming climate. TBE is a virus transmitted by ticks and there is no cure for it, but vaccination can help protect individuals from infection.

The trend of increasing TBE cases has been observed throughout the 2010s, particularly in regions such as the capital area and Western Uusimaa. By the end of September 2023, 194 cases had been reported to the infectious disease register maintained by THL, surpassing the total number of cases in 2022 and 2021. The number of cases in neighboring Sweden has also increased due to similar environmental factors.

To combat this growing threat, efforts are being made to expand TBE vaccination programs. Vaccination is recommended as a preventive measure against TBE, especially in regions where ticks are prevalent. The vaccination schedule typically includes three doses to provide optimal protection. It is important for individuals to stay informed about TBE and take proactive measures to prevent tick bites, such as wearing long pants and sleeves when outdoors and using insect repellents.

The increase in TBE cases highlights the importance of public awareness and action in combating tick-borne diseases. By staying informed and taking preventive measures, individuals can protect themselves from potentially serious illnesses caused by tick-borne viruses.