Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts ...

Influenza viruses like bird flu can mix and match their genomes, and this has played a role in at least three of the last ...

Influenza, commonly called "the flu," is caused by viruses that infect the respiratory tract. Compared with most other respiratory infections, such as the common cold, the flu often causes a more ...

Just days after the USDA issued a new order that all raw milk must be tested for bird flu, reports have emerged of animals dying of the virus, including cats and several zoo animals.

A CDC advisory panel vote to recommend against use of seasonal influenza vaccines containing small amounts of thimerosal ...

Bird flu rarely makes the jump from animals to humans, but the CDC has been monitoring cases in 2024. This first severe case marks a potential shift in the severity of the current disease's spread.

Although flu and stomach flu have similar-sounding names, they are caused by different viruses and have different symptoms and treatment.

A rash is not a common symptom of the flu, but it can sometimes occur. Learn more about a flu rash and other possible causes of a rash here.

Influenza C typically causes mild illness and doesn’t cause widespread epidemics, the CDC says, while influenza D mostly affects cattle.

Influenza A is believed to be the most severe type of flu virus for humans, although this is the subject of debate, as there is some evidence to suggest that influenza B might be equally as dangerous.

Influenza C can also infect people but causes very mild illness and is not associated with epidemics, while type D affects cattle and other animals and is not known to cause illness in humans.

The flu is spreading far and wide across the U.S. – and influenza A is largely to blame.