US flu activity climbs, with more deaths in kids The nation's flu activity continued a steady rise last week, with 44 states at the high or very high level and that national test positivity just shy of 30%, the Centers for Disease Control and Prevention (CDC) said today in its weekly update. CIDRAP

The nation's flu activity continued a steady rise last week, with 44 states at the high or very high level and that national test positivity just shy of 30%, the Centers for Disease Control and Prevention (CDC) said today in its weekly update.

Outpatient visits for flulike illness have been above the national baseline for 9 weeks in a row.

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