Boston recorded its first pediatric flu deaths in more than a decade — just as federal officials rolled back vaccine requirements, a move the city’s top health official blasted as “reckless” and “not ...

Flu activity continues to remain elevated across the U.S. with at least 18 million cases, according to newly released data ...

A fast-spreading new flu strain is gaining a reputation as a monstrous “super flu.” The mutation of influenza A(H3N2) called subclade K is driving up infections across the country, including in New ...