A person in Louisiana has contracted the nation's first severe case of bird flu after the virus mutated inside their body, ...

Most human cases of bird flu in North America have been mild, a fact that’s underscored by a new study of the first 46 ...

Here’s what to know about the United States’ first confirmed severe case of H5N1 avian influenza—and how to protect yourself.

Teen's recovery from H5N1 bird flu raises concerns after genetic mutations suggest virus could become more dangerous to ...

The Centers for Disease Control and Prevention (CDC) has confirmed the country’s first “severe” case of bird flu in humans.

The patient is experiencing severe respiratory illness related to ... This is the first case of human bird flu in the U.S. linked to exposure to backyard flock. Three influenza A (H5N1/bird ...

A Canadian teen's severe bird flu infection has raised alarms about the rising threat of H5N1. With symptoms like fever, ...

Google searches for bird flu symptoms shot up 500%, with bird flu topping all trending "symptoms" searches, according to the ...

Dozens of cats across the U.S. have tested positive for avian flu, federal officials say. The west coast has been hit especially hard.

Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.

On Wednesday the CDC said that a patient has been hospitalized with a severe case ... bird flu may include fever, feeling feverish, having chills, eye redness, eye irritation, as well as ...