Fewer tick-borne encephalitis and Lyme disease cases in Lithuania this year

Lithuania has seen a notable decline in tick-borne encephalitis and Lyme disease cases during the first six months of 2026. Data from the National Public Health Center (NVSC) reveals a sharp decrease in both illnesses compared to the same period last year.

From January to June 2026, the country confirmed 92 cases of tick-borne encephalitis, a nearly 50% reduction from the 176 cases registered in the first half of 2025. Similarly, cases of Lyme disease also decreased, with 2,607 reported cases this year, down from 4,329 in the corresponding period of 2025.

This year has also seen a reduction in fatalities related to these diseases. One death from tick-borne encephalitis was recorded in the first half of 2026, compared to two deaths during the same period in 2025. The NVSC notes that the highest incidence of tick-borne encephalitis typically occurs between May and October, accounting for nearly 90% of all cases annually.

Further analysis indicates a difference in the demographics affected by these diseases. Rural residents are more frequently diagnosed with tick-borne encephalitis, while Lyme disease is more commonly diagnosed in urban populations.