From the Pedia

Lyme Disease on the Rise in Butler County, Pennsylvania

June 28

The reported number of cases of Lyme disease in Butler County in western Pennsylvania is rising sharply, according to medical officials. As recently as 2000 there were no reported cases of Lyme disease. However the incidence of ticks is increasing bringing with it tick-borne infections such as Borrelia.

Drs. Jeffrey Moldovan, Joseph Forrester, and Amesh Adalja comment.