Blacklegged tick populations have expanded via migration, biologists show
Monday, July 6, 2015 - 13:50
in Biology & Nature
Lyme disease cases are on the rise, with diagnoses occurring in areas that were historically Lyme-free. Scientists attribute the spread to the fact that populations of blacklegged ticks, which carry the bacteria that causes the disease, now flourish in areas once thought to be devoid of ticks.