67 cases of H5N1 bird flu have been recorded in humans since the beginning of 2024, according to the CDC, 38 of which were in California, 10 in Colorado, 11 in Washington, and the rest scattered ...

The H5N1 avian influenza virus has infected birds and mammals around the world. As of June 2025, 70 people have been infected ...

Avian influenza, commonly known as bird flu, primarily affects birds and some cattle. However, a new study has shown that the H5N1 strain can spread through air, raising the risk of infections ...

Experts have long recognized that the H5N1 virus that causes the disease has pandemic potential, just like COVID-19 or swine flu. In the past three years, ... New avenues for evolution.

But for the H5N1 2.3.4.4b strain (A/Texas/37/2024) isolated from the first human infection with a bovine H5N1 virus in the United States, researchers found that just a single amino acid mutation ...

Evolution is a game of odds. And as it is, each infection gives bird flu a spin at the wheel to become something utterly terrible. But, if it does, it likely does so far from any gathering of ...

California researchers say the world may be just one genetic tweak away from human-to-human transmission of the H5N1 bird flu virus — a worrisome mutation that could open the door to widespread ...

Meghan Frost Davis, a veterinarian and Johns Hopkins professor, has been warning for months that rodents contracting H5N1 would be a major red flag in the evolution of bird flu. “What we really ...

That genetic twist would likely diminish H5N1’s virulence, experts predict, but no one can say how much less deadly it might become. And even a virus that kills far fewer than 52 percent of ...

Dr. John Matthews, a virologist and influenza expert, warns, "The rapid evolution of the H5N1 virus is alarming. While current vaccines offer some protection, the mutations we are seeing could ...

67 cases of H5N1 bird flu have been recorded in humans since the beginning of 2024, according to the CDC, 38 of which were in California, 10 in Colorado, 11 in Washington, and the rest scattered ...