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This is Scientific American 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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Summer's here and with it come picnics, barbecues and of course salmonella.

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The germ is notorious for contaminating a variety of favorite warm-weather foods.

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But the bacteria's palate is more limited than our own.

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Once salmonella makes its way into your system, it relies on a single unusual nutrient to survive.

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That's according to a study in the journal PLoS Pathogens.

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Most people tough it out when they get food poisoning from salmonella.

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That's because treatment with antibiotics would eliminate the infection,

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but also wipe out the gut bacteria that promote good health.

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To figure out how to target salmonella specifically, researchers screened for genes vital for the microbe's survival during the active phase of infection.

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And they identified a cluster of five genes that work together to allow the bacteria to digest a molecule called fructose-asparagine.

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No other organisms are known to use this chemical for fuel,

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so starving salmonella of it could be a new strategy for fighting this foodborne bug while leaving desirable intestinal inhabitants unharmed.

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Next, the researchers plan to see which foods contain large amounts of salmonella's go-to snack.

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But please, don't send unsolicited samples of Aunt Agnes's egg salad.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Karen Hopkin.

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