News Life

New species of bacteria found to cause Lyme disease

Symptoms worse, but so far microbe found only in Midwest

a deer tick

TOUGH BITE Deer ticks are now spreading a new species of bacteria that causes Lyme disease.

Scott Bauer/USDA

By Laura Beil

- More than 2 years ago

BOSTON — A new species of bacteria is causing Lyme disease, adding to worries that the infection will continue its relentless escalation across the United States.