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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?

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With swine flu the big infectious disease story, you don't hear much about bird flu these days.

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And you may not have to look past your own nose for the reason.

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Because a new study finds that bird flu viruses may have trouble getting a good foothold in humans thanks to the temperature of our noses.

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That's according to research just published in the journal Public Library of Science Pathogens.

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Avian or bird flu comes in sixteen subtypes.

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Some can pick up surface proteins from human flu viruses that allow the bird virus to then infect humans.

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But the new study shows that normal bird flu viruses just can't seem to cut it at the typical human nose temperature of about 90 degrees Fahrenheit.

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Probably because the bird viruses usually make their home in the guts of birds, at a balmy 104 degrees Fahrenheit.

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So if a normal bird flu virus checked into your nose, chances are it would check out before it had a chance to multiply, mutate and do any damage.

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Indeed, in this case your chilly beak is something to crow about.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Steve Mirsky.

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