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The acquisition and transmission of pathogens are separated by long periods of free living. A series of hormonally mediated changes occur in the body of the feeding tick during the first day of host contact; The tick is blind, but senses carbon dioxide, temperature, odors, ammonia and movements. The Haller�s organ on the final segment of the first pair of legs, serves for orientation during feeding.

Questing ? The tick is waiting on vegetation for a host. Flagging ? A flag of say 1 square m of cloth on a stick is dragged. Ticks jump on the flag from which they can be collected. Traps can have dry ice as an attractant.