Half of adult ticks in the Northeast carry Lyme disease bacteria, study reveals

Across most of the Northeast, getting bitten by a blacklegged tick—also called a deer tick—is a risk during spring, summer, and fall. A new Dartmouth study, published in Parasites and Vectors, finds that 50% of adult blacklegged ticks carry the bacteria that causes Lyme disease while up to 25% of the younger (nymph) blacklegged ticks carry the bacteria.