US flu season is underway, as cases surge in some areas and vaccinations lag The U.S. flu season is underway. The Centers for Disease Control and Prevention on Friday released its latest flu-monitoring data, and noted sharp increases in several measures. AP News

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Thirteen states reported high or very high levels of flu-like illness last week, about double from the week before. One is Tennessee, where a sickness spike is hitting the Nashville area, said Dr. William Schaffner, an infectious diseases expert at Vanderbilt University.

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