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This is Scientific American's 60-Second Health. I'm Katherine Harmon. Got a minute?

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Ticks can really get under your skin. Literally.

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And in many parts of the country they spread illness, including Lyme disease and Rocky Mountain spotted fever.

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Add to that list a new scourge: Heartland virus, which doesn't respond to treatment.

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This infection was described for the first time last year after two Missouri men were hospitalized with fever and headaches.

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No one was sure how the men contracted the disease.

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Now a study in the American Journal of Tropical Medicine and Hygiene confirms that ticks were the transmitters.

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Researchers tromped out to the two men's properties, and 10 more sites in the region, to set up tick traps.

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These included containers of dry ice, which emit carbon dioxide to attract ticks, and flannel bedding, which traps them.

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They also picked some ticks off of area dogs and horses.

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All told, they collected more than 56,000 tick specimens.

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And they found the virus residing in lone star ticks, the most common in the region.

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About one in 500 of the arachnids carried the virus.

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Enough to make me check for ticks. And then check again.

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Thanks for the minute, for Scientific American's 60-Second Health. I'm Katherine Harmon.

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