In May, authorities in Mexico confirmed a fatal human case of H5N2 bird flu. The patient was the first human to become ...

A 13-year-old girl in Canada became so sick with H5N1, or bird flu, in late 2024 that she had to be put on a ventilator.

A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some ...

For example, in 2004, a highly dangerous bird flu strain appeared in a Texas chicken flock. The outbreak involved an H5N2 virus (not the H5N1 bird flu). By April 2004, the outbreak had ended.

For influenza viruses, imperfection is a strength. They constantly mutate, producing new strains that challenge immune ...

The bird flu outbreak has spread to all 50 states, infecting dairy cattle, poultry farms and 61 humans across the country.

The first severe human bird flu case in the United States was reported in Louisiana earlier this month. Genetic analysis found the virus had mutated, making it more easily transmissible to humans ...

Egg prices rose to a record high in the U.S. recently, hitting $5.27 a carton. Egg prices will remain high this winter as ...