The “Tick bite model 2018” shows the local risk of being bitten by a tick in mild and damp weather conditions in early summer. It is based on the tick potential risk from the prevention app “Tick”. The image shows where the probability of coming into contact with ticks is high (red zones) or low (blue zones). However, this does not yet explain if these ticks are carrying pathogens. “Citizen science” data recorded by the app helps to review the model. After the first review in 2018, a second review will follow with additional recorded app data in 2020. According to the results, the “Tick bite model 2018” will be revised and updated on map.geo.admin.ch in autumn 2020.