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Flu cases surge nationwide after holidays as mutated H3N2 strain spreads

Flu cases continue to rise nationwide after weeks of holiday gatherings, contributing to what health officials describe as a moderately severe flu season. As people return to work and school, concerns are growing—especially among parents. The CDC reports a significant surge in cases over the holidays, driven in part by the H3N2 strain, which experts say has mutated compared to previous seasons.
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