Insect repellents such as DEET can be used on your skin and permethrins on clothes. After an orienteering event, do a careful tick search. Have a friend examine your back and scalp. If you find a tick, remove it by grasping its head with tweezers and applying gentle traction. Place it in a closed container such as a 35mm film canister with a cotton ball moistened with water.
Most hospital labs can do species identification.
The Ixodes has black legs. If the tick is not Ixodes, then there is no risk of disease, and no serological test and no antibiotic treatment is necessary. If the tick is Ixodes, have it tested to see whether it is infected with Borrelia burgdorferi. At this time, there is no charge. They will test live or dead and dry ticks.