Moderna's new flu vaccine, based on the same mRNA technology used in its COVID-19 shot, showed promising results in a major ...

The trial enrolled more than 40,800 adults 50 and older from 11 countries.

Healthy adults who receive inactivated parenteral influenza vaccine rather than no vaccine probably experience less influenza, from just over 2% to just under 1% (moderate-certainty evidence). They ...

For most people, the flu presents a few days of feeling miserable. For others, including very young children and older adults, the flu can be more dangerous.