5,722: Number of new Lyme disease cases in Pennsylvania (2009)
50,000: Number of possible undiagnosed or unreported cases statewide
100: Number of strains of the Lyme bacterium borrelia burgdorferi
500: Number of users logging on to lymepa.org daily
1,300: Approximate deer population at Valley Forge National Historical Park (an eightfold increase over the past 25 years)
$2.9 million: Cost of the park’s 15-year deer-management plan
58: Number of deer per square mile in Lower Merion Township (2008)