In 2025, ticks were most likely to carry Lyme disease.

In ticks brought for analysis from January to August 10, 2025, in 19% of cases, that is, in one in five, Lyme disease pathogens (borreliosis) were detected, in 3% — anaplasmosis, in 1% — ehrlichiosis, and the encephalitis virus was found in 62 arthropods, the laboratory told Izvestia "Hemotest".

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In Russia, the incidence of tick-borne borreliosis is becoming more frequent, Andrei Pozdnyakov, an infectious disease specialist at Invitro-Siberia, confirmed to Izvestia. For example, in the Chelyabinsk region, according to the results of studies of ticks delivered by the population in 2025, 26.6% turned out to be carriers of borreliosis pathogens, 2.9% of ehrlichiosis, 1.5% of anaplasmosis, and 0.85% of encephalitis.

In Udmurtia, more than 4.5 thousand arthropods out of 12.3 thousand turned out to be carriers of Lyme disease. Of the nearly 14,000 arthropods studied, 156 were carriers of tick-borne encephalitis pathogens. And out of 11.6 thousand laboratory-tested ticks, 113 turned out to be carriers of anaplasmosis, 652 of ehrlichiosis. In the Sverdlovsk region, 42.7% of the 27.1 thousand ticks studied were carriers of Lyme disease, 3.2% of ehrlichiosis, 1.17% of anaplasmosis, and 1.18% of tick—borne encephalitis.

Rospotrebnadzor recommended wearing closed and light-colored clothes when visiting the forest, treating it with acaricidal agents and carefully examining yourself and pets after nature walks, as well as being vaccinated against tick-borne encephalitis.

Read more in the exclusive Izvestia article:

Dig into the team: half a million Russians suffered from tick bites in 2025