Saturday, April 4, 2009

Why Flu Hits Hard In Winter

Why the flu strikes hard during the winter but nearly vanishes in the summer has baffled epidemiologists for decades.

Now a new study may have the answer: Influenza germs last longer and pass from person to person more effectively in lower absolute humidity — i.e., when it's cold outside and the air is dryer.

Absolute humidity is a measurement of the total amount of water vapor in the air at a given temperature. Relative humidity, a percentage, is the ratio between the water vapor present and the air's saturation point, a figure that changes with the temperature. Read the entire article.

My favorite product for avoiding the flu or knocking it out is Silver Shield.

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