Bird flu, also known as avian influenza or H5N1, has infected more than 130 million birds over the past two years as it threatened commercial bird operations and recently led to the first human death in the United States.

A patient who had been hospitalized with bird flu dies of the disease, the Louisiana Department of Public Health reports, and Iowa has new outbreak

The risk to the general population from H5N1 bird flu remains low, a World Health Organization spokesperson said on Tuesday, following the first death of a patient from the virus in the United States.

Moderna surged as investors turned eyed potential demand for a vaccine to protect against bird flu after the US reported its first death from the virus.