“Super flu” surge: What to know about spiking flu cases and the surging “Super K” variant

AXIOS December 30, 2025
Herb Scribne, Jason Lalljee Ad

The United States is seeing a massive surge in flu cases this winter, many of them attributed to the so-called “super flu.”

Why it matters: An unprecedented rise in flu cases comes as other sicknesses — such as the “winter vomiting bug,” COVID and whooping cough — are slamming the United States this winter.

• It also arrives as chaos has enveloped the Centers for Disease Control and Prevention, with many questions about vaccination schedules for children.

Driving the news: Cases of the flu remain elevated nationwide, according to data from the CDC.

• New CDC data shows that there’s been at least 7.5 million illnesses, 81,000 hospitalizations and 3,100 deaths from the flu so far this season.
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