Cases across the country had appeared to decline before new public health data showed upticks in infections.

Plus, what the data says.

Flu activity has increased slightly in the United States, driven by a small rise in infections caused by influenza B viruses ...

After a sharp uptick in flu cases in mid-December 2025, flu activity across the U.S. and Canada remains high. Data from the Centers for Disease Control and Prevention shows the U.

Cases of influenza fell sharply in Pennsylvania for the week ending Jan. 17, according to the most recent data. But some years, there's a second spike ...

The Department of Public Health reported that there were 4,641 flu cases in the state during the week ending Jan. 3, down from the previous week’s total of 5,517. For the weeks ending Jan. 10 and Jan.

It's been an unusually early flu season in the Rochester region, but case numbers seem to be heading in the right direction.

(LEX 18) — The CDC recently announced the biggest change to childhood vaccine guidelines in decades, shifting several previously routine vaccines to optional status just as seasonal illness surges ...

As flu cases spike across Western Massachusetts, we're getting answers on how it’s impacting our community and getting a ...

Flu has killed four New York children this flu season after the city saw a historic spike in cases this winter, officials ...

The influenza virus is still spreading but cases are decreasing in this area - for now. A spike is expected in early to ...