New 'aggressive' flu strain emerging as health threat: Where it's spreading the most

Source Fox Chicago
Original Load Date Dec. 25, 2025, 8:01 p.m.
Last Updated Dec. 25, 2025, 8:01 p.m.
Original URL http://www.fox32chicago.com/news/h3n2-flu-strain-emerging-health-threat-where-its-spreading-most

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![New flu strain emerging as a severe health threat][46] #### [ New flu strain emerging as a severe health threat ][47] A mutation of influenza A H3N2, called subclade K, is hitting Americans hard this flu season. A new form of [ _the flu_ ][48] , which is highly contagious and aggressive, is sw...