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Study: Answer to flu may be humidity

February 10, 2009 9:33:40 AM PST
It's been a mystery for decades: Why does the flu hit hard in the winter, but nearly vanish in the summer?Finally, we may have the answer. Scientists at Oregon State University say influenza germs last longer and pass from person to person more readily in lower absolute humidity, which basically means the germ in stronger when it's cold outside and the air is drier.

Researchers say their discovery could lead hospitals or nursing homes to up their humidity in the winter.

These findings are published in Tuesday's Proceedings of the National Academy of Science.


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