Lyme Disease:

Lyme disease, or Lyme borreliosis,^[1] is an emerging infectious disease caused by at least three species of bacteria belonging to the genus Borrelia.^[2][3] Borrelia burgdorferi sensu stricto^[4] is the main cause of Lyme disease in the United States, whereas Borrelia afzelii and Borrelia garinii cause most European cases. The disease is named after the town of Lyme, Connecticut, USA, where a number of cases were identified in 1975. Although Allen Steere realized Lyme disease was a tick-borne disease in 1978, the cause of the disease remained a mystery until 1981, when B. burgdorferi was identified by Willy Burgdorfer.
Learn more about  Lyme Disease and other diseases transmitted by tics at:  http://en.wikipedia.org/wiki/Lyme_disease