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This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?

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Lyme disease may be the most well known illness spread by ticks.

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But it's far from the only one.

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The most common vector for Lyme is the deer tick, and it spreads five other known pathogens.

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One of those pathogens is what's called the Babesia parasite.

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It infects red blood cells, like malaria, causing the sometimes-fatal disease babesiosis.

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Now we learn that these tick-borne diseases may have more in common than their host.

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Because Lyme disease may actually facilitate the spread of babesiosis.

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That's according to a study in the journal PLOS ONE.

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Researchers allowed ticks to feed on mice infected with babesiosis, or with both babesiosis and Lyme.

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And ticks that fed on mice with just babesiosis were less likely to pick up the parasites than were ticks who munched on mice carrying both infections.

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Study author Maria Diuk-Wasser of Columbia University says the one-two punch of both diseases could be too much for the mice to handle.

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"The immune system may be, we could say, occupied with one pathogen, and decreases the response to the other one."

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Based on field studies, she and her co-authors believe the same phenomenon may be happening in nature, too.

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For now, at least, babesiosis isn't as widespread as Lyme.

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And if these results are correct, cutting down on Lyme's prevalence might also slow the spread of babesiosis,

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"So we would get a synergistic effect of a control method that would attack both diseases at the same time."

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If, that is, we can find a truly effective way to limit Lyme.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.

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