A study of thousands of blacklegged ticks showed that the tiny arachnids would more often than expected deliver two diseases at once.
The bacteria that cause the illness may have been lurking around for 15 million years -- long before humans walked on Earth.
With 10 times as many Americans affected by Lyme disease than previously reported, progress on vaccines is progressing.
This method of extermination killed between 75 to 100 percent of the ticks in the area. Continue reading →