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Flu hospitalizations are also on the rise, with the highest levels in seniors, a pattern often seen in H3N2-dominant seasons.
More states are reporting their first cases and even deaths, but at the national level, flu levels remained low last week.
A late-season "flu B" surge serves as a reminder that it can be severe in adults, as a recent study shows.
US flu activity continues a slow decline, similar to Canada, while Europe shows mixed activity.
The CDC said flu is still hitting some states hard, but overall the disease continues to decline.
Some influenza markers are down, others up, and regions are seeing widely varying case levels.
News of a severe ILI cluster in Texas parallels a dramatic flu rise—mostly from H1N1—in the region and nation.
Influenza activity in the United States edged slightly higher during Thanksgiving week.
The US flu season is picking up, and 2009 H1N1 is the dominant strain so far.
US flu activity stays steady overall, but reports of flulike illness in the South grow.
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