Bird Flu

Bird flu fears have focused on the poultry and dairy industries and human health. But wild animals are threatened, too—at scales no one fully understands

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts warn that it hasn’t disappeared

Your favorite word game with a twist of science

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another question

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

This San Antonio, Tex., lab takes biosecurity seriously. Suit up with its scientists and go behind the scenes of the science of vaccine creation.

The bird flu was long known to poultry farmers. Here’s why the dairy industry was caught off guard by its jump to cattle.

The first hints that a new strain of avian illness is emerging could be found on this beach on Delaware Bay, where migrating birds flock. Here’s what virus detectives who return there every year know right now.

Researchers have tested an mRNA vaccine against avian influenza in calves with promising results

As the bird flu outbreak continues, public health outreach to farm workers is meeting fear and resistance amid Trump’s attacks on immigrants

The detection of bird flu in a sheep is another sign that the H5N1 virus is adapting to hop to new hosts

Secretary of Health and Human Services Robert F. Kennedy, Jr., has repeatedly suggested that farmers should let bird flu spread through flocks. Experts explain why that’s a dangerous idea