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US flu activity stays steady overall, but reports of flulike illness in the South grow.
The US flu season is picking up, and 2009 H1N1 is the dominant strain so far.
Influenza activity in the United States edged slightly higher during Thanksgiving week.
US flu activity showed a modest jump last week, with the clinic visits for flu-like illness rising above baseline for the first time this season.
The visit to China in December did not involve areas of high risk or contact with ill people.
Some influenza markers are down, others up, and regions are seeing widely varying case levels.
Numbers hint that season may have peaked, and obesity is being reported in many hospitalized flu patients.
The CDC said flu is still hitting some states hard, but overall the disease continues to decline.
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CIDRAP - Center for Infectious Disease Research and PolicyOffice of the Vice President for Research, University of Minnesota, Minneapolis, MN
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