Bird flu makes millions of copies of itself within ... the CDC said — and did not spark a major outbreak at that time. The change, on the PB2 gene linked to how the virus makes copies of itself ...

A genetic mutation of H5N1 detected in California dairy cows raises concerns about increased mammal-to-mammal transmission ...

Experts warn of concerns over U.S. bird flu outbreak as federal agencies struggle to rehire fired employees. Updates on mutations and response efforts here.

Scientists are sounding the alarm about a concerning genetic mutation of the H5N1 bird flu virus, recently identified in four ...

The ribonucleoprotein complex comprises a viral RNA segment associated with the nucleoprotein (NP) and three polymerase proteins (PA, PB1, and PB2). The matrix (M1) protein is associated with both ...

Yoshi Kawaoka: So in the past, there are avian influenza viruses that are in migratory waterfall [that] acquired mutations in PB2 proteins that make the virus replicate better in mammalian species ...