Switzerland has experienced a particularly mild winter, with temperatures frequently 2 degrees above long term averages. This has brought forward the tick season. Already, 6 cases of tick-borne encephalitis (TBE) have been reported by Switzerland's Federal Office of Public Health (FOPH). This number of infections by this point of the year has not been seen for 12 years.
In addition to tick-borne encephalitis ticks carry Lyme borreliosis, a bacteria which can eventually attack the joints, heart, and nervous system. This is the most common tick-borne disease. During January 2025, 126 cases of Lyme disease were recorded, up from 90 in January 2024.
Vaccination against TBE is recommended for (planned) stays in endemic areas. In addition, protect yourself against ticks during outdoor activities (see factsheet mosquito and tick bite protection).
After recreational activities: Always examine your body for ticks or tick bites. If redness appears at least 3 days (7-10 days on average) after tick bite: consult a physician to rule out erythema migraines (Lyme disease), which would require antibiotic treatment.
As of 2019, vaccination against the disease is covered by Swiss basic health insurance. It is recommended in almost all Swiss cantons.
TBE vaccination recommendation by FOPH (red) and reported locations of tick bites in Ticino (yellow), LINK to interactive map.