"Super Flu" Surge Hits Record Highs Across the U.S
- Jan 8
- 2 min read
Flu activity is exploding across the United States, reaching record highs not seen in nearly three decades. According to new CDC data, 8% of all medical visits during the week ending December 27 were related to flu-like illnesses—the highest level recorded since tracking began in 1997. This surge has resulted in an estimated 7.5 million illnesses, 81,000 hospitalizations, and 3,100 deaths so far this season.
The Rise of Subclade K Health experts have identified a new mutation, known as subclade K, as the primary driver behind this "super flu". Originating from the H3N2 variation of Influenza A, this strain is structurally different from previous versions, allowing it to more effectively dodge immune systems. Consequently, the 2025-2026 seasonal vaccine is reported to be less effective against this specific mutation, though it still offers critical protection against severe illness and death.
Pediatric Impact and Regional Alarms The impact has been particularly devastating in states like Michigan, where health officials report an exponential increase in pediatric cases. Some children have been placed on ventilators in intensive care units, and the state has seen a 40% increase in flu-related hospitalizations compared to last year.
While the surge is felt nationwide, activity is categorized as "very high" in the Northeast and parts of the Mountain West, including Colorado and Wyoming, where positive test rates have exceeded 45%. Conversely, while San Diego is seeing rising numbers, it has not yet hit the record-breaking peaks observed in other regions.
The Path Forward Medical professionals emphasize that it is not too late to seek protection. Vaccination remains the most effective tool to prevent serious complications, especially for children who are most vulnerable to the disease's severity. Beyond shots, the CDC continues to recommend basic hygiene, such as washing hands for at least 20 seconds and masking while ill, to curb the spread of this aggressive season.
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Keywords: "Super flu" surge
"Super flu" surge
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