Flu activity decreased slightly but remained at high levels across the United States during the week ending February 18, according to a report based on preliminary data issued Friday by the Centers for Disease Control and Prevention.
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Fri, 02/24/2017 - 3:15pm
Flu activity decreased slightly but remained at high levels across the United States during the week ending February 18, according to a report based on preliminary data issued Friday by the Centers for Disease Control and Prevention.