FILE -This colorized electron microscope image released by the National Institute of Allergy and Infectious Diseases on March 26 ... U.S. bird flu death has been reported — a person in Louisiana who had been hospitalized with severe respiratory symptoms.

The U.S. has recorded its first death of a person infected with the H5N1 bird flu virus. The patient was a resident of southwest Louisiana who was hospitalized last month

FILE -This colorized electron microscope image released by the National Institute of Allergy and Infectious Diseases on March ... been reported — a person in Louisiana who had been hospitalized ...

Health officials have said the person was older than 65, had underlying medical problems and had been in contact with sick and dead birds in a backyard flock.

The case of the Canadian teen and the death of a Louisiana man are stark reminders of bird flu’s capacity to ignite serious illness.

The variant circulating in America appears to be less lethal and could be triggering different responses from the immune system

As fears grow of a possible bird flu pandemic in humans, the federal government is pouring more money into the development of new vaccines, including an mRNA shot.

The first U.S. death from bird flu is raising new concerns about the H5N1 virus, and whether bird flu will become the next pandemic.

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Researchers are comparing the genetic features of the B.C. patient's avian flu strain with that of a Louisiana patient who died last week.

NEW ORLEANS (WVUE) - The Centers for Disease Control’s influenza map has Louisiana shaded purple, indicating very high levels of the flu. Other viruses are sickening people as well, in what some have dubbed a “quademic.”

US health officials announced Friday they were awarding $590 million to Moderna to develop mRNA vaccines against influenza, including advancing the company's bird flu vaccine, as fears of a new pandemic grow.