Flu Cases Surge Amid 'Second Peak' Concerns

Experts warn of rising flu infections, especially among children, as the season continues.

Jan. 31, 2026 at 3:55pm

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After a brief decline, flu cases across the U.S. are on the rise again, with a 'second peak' of infections looming, according to public health experts. The latest CDC data shows upticks in flu cases, particularly among school-age children, raising concerns that the flu season is far from over.

Why it matters

The flu can be a serious illness, especially for vulnerable populations like the elderly, young children, and those with underlying health conditions. A prolonged and severe flu season can strain healthcare resources and lead to more hospitalizations and deaths.

The details

Flu season typically runs from fall through winter, but this year's season has been particularly challenging. After an initial peak around the New Year, cases appeared to decline before the latest CDC data showed infections ticking back up, especially among children and teens. Experts say the dominant influenza A(H3N2) strain has been highly transmissible, leading to a relatively severe season so far. While flu vaccines have provided some protection, the influenza B strain has also been 'smoldering' and could become more prominent later in the season.

  • The first peak of the flu season occurred around the New Year.
  • For the week ending January 24, there were 8 more child flu deaths, bringing the total to 52 this season.
  • The latest CDC data, as of January 30, showed upticks in flu infections, particularly among school-age children.

The players

Caitlin Rivers

A Johns Hopkins University epidemiologist who writes the 'Force of Infection' newsletter.

Dr. William Schaffner

A professor of infectious diseases at Vanderbilt University Medical Center in Nashville.

Dr. George Rust

A professor at the Florida State University College of Medicine.

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What they’re saying

“We are heading up a second peak of flu season.”

— Caitlin Rivers, Epidemiologist

“We're not out of the flu winter yet.”

— Dr. William Schaffner, Professor of Infectious Diseases

“If you're sick, don't be a hero. Don't spread your germs.”

— Dr. George Rust, Professor

What’s next

Experts recommend that those who are eligible get their flu shot as soon as possible, as it's still not too late to get vaccinated. They also advise practicing good hygiene, such as frequent handwashing and staying home when sick, to help prevent the spread of the flu.

The takeaway

This flu season has been particularly challenging, with a 'second peak' of infections looming. While flu vaccines have provided some protection, the highly transmissible influenza A(H3N2) strain and the lingering influenza B strain have contributed to a severe season that is not yet over. Continued vigilance and preventive measures are crucial to mitigate the impact of the flu.