Annual diagnoses of Lyme disease cases are about 10 times higher than previously reported, with as many as 300,000 individuals diagnosed each year with the tick-borne disease, according to the CDC. Cases were concentrated in 13 states, mostly in the Northeast and the upper Midwest. The report "confirms that Lyme disease is a tremendous public health problem in the United States, and clearly highlights the urgent need for prevention," the CDC's Dr. Paul Mead said.

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