Lyme disease diagnoses are on the rise according to a new study published by the government this week. The geographic areas where Lyme disease appears to be the biggest danger has dramatically increased with U.S. cases remaining concentrated in the Northeast and upper Midwest. The study revealed that more areas in those regions are considered high-risk. With a total of 260 counties where the number of Lyme disease cases doubled is expected given the growing number of America's population. That increase is up from 130 just 10 years ago.