Americans are being urged to be extra vigilant this winter, as a suite of influenza A mutations has created a dominant virus ...

A late-emerging influenza A mutation known as subclade K weakened protection, but doctors say vaccination still reduces ...

A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine effectiveness this season. Here are the states at most risk.

Australia’s 2025 flu season lasted weeks longer than it normally does. Hong Kong’s hit so early that the rollout of seasonal ...

SAN FRANCISCO (KGO) -- Preliminary data out of South Africa is giving the world insight into how strong omicron really is. The South African Medical Research Council just reported this variant may ...

One thing we know for sure about SARS-CoV-2, the virus that causes COVID-19, is that it keeps changing. Since the start of the pandemic, we have seen several notable variants, including Alpha, Beta, ...

Flu cases are rising rapidly across the US due to a new strain called subclade K, a mutated form of the H3N2 influenza A ...

Influenza cases are down across the United States, but a new flu strain mutation identified in August is causing a spike in ...

Have you ever wondered why you have to get a flu shot every year, but some vaccines are one-and-done? It all has to do with how and how fast viruses evolve - and that depends on mutation rates.

COMPANY PROMOTED AND MONITORED OPIOIDS. RIGHT NOW, AT 446 IN THE AFTERNOON, WE TURN OUR ATTENTION TO FIVE ON YOUR HEALTH, AND THERE IS A NEW VARIANT OF THE FLU VIRUS THAT’S CREATING AN EARLY SURGE OF ...