In the Bible, there was a snake in the Paradise. The Archipelago, there are the ticks that can spread Borreliosis or Tick-borne Encephalitis (TBE). The best ways to avoid these diseases are
avoiding areas with long grass;
covering your skin (wearing long pants/no sandals/long-sleeved shirts);
reacting if you feel something walking on your skin; and
checking daily yourself for bitten ticks, removing them, and following up if a borreliosis skin symptom is created.
The organisers are equipped with tick removers. There are vaccines against the TBE.