Medical experts debunk flu shot myths: vaccines use inactive virus that cannot cause illness. Discover what side effects actually mean for your immunity.

This year’s flu shot may be more effective than researchers thought - even as cases across the US are rising - This is ...

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 ...

Infant protection against respiratory syncytial virus (RSV) by maternal RSV vaccination or receipt of RSV monoclonal antibody ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...