Tick-borne encephalitis is caused by flavivirus, transmitted by ixodid mites, and cases of infection through fresh milk are described. After a 10-day incubation period, catarrh, fever, headache, joint pain, CNS lesions (encephalitis - 30%, meningitis - 60%, meningoencephalitis - 10%). Vaccination from tick-borne encephalitis in endemic areas has led to a reduction in the incidence