Lithuania warns of second autumn wave of tick-borne encephalitis after 380 cases and four deaths this year
Lithuanian health authorities are warning of a second wave of tick activity this autumn, with 380 tick-borne encephalitis cases and four deaths recorded so far this year. Latvia also continues to face an elevated risk from tick-borne diseases.
Health specialists in Lithuania are warning about a second surge of tick activity expected during the autumn months, which could increase the risk of contracting tick-borne illnesses. So far this year, the country has recorded 380 cases of tick-borne encephalitis, four of which have proven fatal.
Lithuania's National Public Health Centre notes that autumn marks the second period of heightened tick activity, meaning people heading into forests to pick mushrooms or berries, or simply out for a walk, should be aware of an increased risk of infection. Extra caution is advised during this season, as tick activity can rise again after the summer months.
What is tick-borne encephalitis
Tick-borne encephalitis is a viral infection that can affect the central nervous system. It typically begins with flu-like symptoms such as fever, headache and fatigue, but in more severe cases it can lead to neurological complications, paralysis, and even death.
The situation in Latvia
Latvia also continues to face an elevated risk from tick-borne diseases. According to the Centre for Disease Prevention and Control, 186 cases of tick-borne encephalitis were registered in Latvia in 2025 — 20 more than the previous year. Lyme disease affected 539 people last year, an increase of 180 cases compared to 2024.
The centre notes that tick activity season in Latvia typically runs from April until late autumn, though favorable weather conditions can extend it further. Vaccination remains one of the most effective ways to protect against tick-borne encephalitis. In 2026, state-funded vaccination for children against the disease is available in eight Latvian municipalities: Ventspils, Kuldīga, South Kurzeme, Talsi, Saldus, Cēsis, Tukums and Limbaži.
