US faces unprecedented bird-flu outbreak: What you should know.

The US is experiencing its worst-ever outbreak of bird flu, with a new H5N1 strain killing over 58 million chickens, turkeys, and other birds. The disease is heavily impacting wild birds, which could affect food security and the economy. Researchers believe that bird flu will probably become endemic in the US, which could have serious consequences. While the disease can and does affect humans, it's rare. The markets are also being affected, with the unprecedented spread of disease and high inflation rates raising farmers' costs.