While current flu shots need to be updated each season, scientists are finding new ways to make vaccine that could last much longer and cover more strains.

The World Health Organization (WHO) today announced recommendations for the viral composition of influenza (or "flu") vaccines for the 2026-2027 northern hemisphere influenza season. The announcement ...

On the surface of the influenza virus are two molecular "keys": hemagglutinin (HA) and neuraminidase (NA). They are the virus's lockpicks, the tools that let it slip into our cells and spread from one ...

Influenza A (H3N2) viruses appear to have entered a new phase of evolution. Analysis of more than 24,000 viral sequences revealed increasing diversification within clade J.2 and the emergence of a new ...

VIVIAN, LA - DECEMBER 12: With a temperature of 103.8, Asa Moore, 6, of Vivian, Louisiana is examined by John Messier, a physician's assistant, at the North Caddo Surgical and Medical Center for ...