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Flu Outbreak in 11 States

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Four states have high levels of flu activity, with more activity across the U.S. expected to be forthcoming.

Overall, U.S. flu activity is on the high side of moderate, and is showing a plateau after an upward trend. Florida has high flu activity,with the highest conentrated flu cases in Miami; Tampa, and Jacksonville.According to the CDC's more traditional tracking of the number of people seeking medical care for flu-like illness, flu activity is also high in Alabama, Georgia, Louisiana, and Mississippi.

And according to state epidemiologists, flu is geographically widespread in 11 states: Alabama, Arizona, Connecticut, Kentucky, Louisiana, Maryland, Nevada, New York, North Carolina, Tennessee, and Virginia.

Flu Outbreak Predictions

While the CDC data show that flu definitely has arrived, they do not predict where, when, or even whether the disease will flare up or die down. In states with high flu activity, flu may be limited to one or two large cities. And in states with widespread flu activity, there may be few if any hot spots.

Unlike Europe, where high flu activity is mainly due to the 2009 H1N1 flu bug, the U.S. flu epidemic is mixed. Most of the flu is type A, with the old H3N2 flu bug predominant but with a good bit of 2009 H1N1 activity. About one in four cases are type B flu.

Happily, nearly all the flu cases have been caused by flu viruses included in this year's three-in-one seasonal flu vaccine.

Children Dying from the Flu

Four children died of flu in the first week of January, according to the CDC. So far, the 2010-2011 flu season has claimed the lives of eight children.There were 282 U.S. pediatric deaths during last year's flu pandemic, 133 in the 2008-2009 season, and 88 in the 2007-2008 season.

Hospitals in 122 U.S. cities report that deaths from "pneumonia and influenza" -- a statistic that reflects flu activity -- are at the epidemic level. Deaths from "pneumonia and influenza"been on the upswing since just before Christmas.

CDC is Tracking a New Flu Statistic

This year, the CDC is tracking a new flu statistic: the percentage of hospitalized flu patients who have certain underlying conditions. So far this year, among people hospitalized for flu:

  • 30.1% of adults have a metabolic disorder such as diabetes or thyroid dysfunction.
  • 22.5% of children and 21%of adults have asthma.
  • 23.7% of adults and 7.5% of children have heart disease or artery disease.
  • 16.9% of adults are obese.
  • 16.9% of adults have kidney disease.

Google Flu

The CDC is also linking to a new indicator of flu activity: Google searches for flu-related topics. According to the Google/CDC indicator:

Bottom Line on Flu

It's not uncommon for the flu season to have several peaks before the season ends in the spring. While it is not possible to predict where the worst cases will be , there is one thing is for sure: A lot more Americans will get the flu before the season ends -- unless they get the flu vaccine.

SOURCES: CDC: "FluView."

Last modified on Wednesday, 19 January 2011 06:35
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