Nuzzo said there are other hypotheses — which she stressed are just hypotheses — including one that posits people who were ...

Another cause for concern: flu season is underway in the U.S., and as seasonal influenza virus goes around, “humans, ...

A Canadian teen who is in critical condition after contracting H5N1 bird flu was infected with a version of the virus that is different from the one circulating in U.S. cattle.

Swine can act as so-called “mixing vessels” for human and bird flus, giving avian viruses an opportunity to adapt for spreading in people.

Researchers have identified new roles for a protein long known to protect against severe flu infection—among them, raising ...

A year after an outbreak of H5N1 killed thousands of elephant seals, only about a third of the seals normally expected here ...

Amid an ongoing outbreak of bird flu in American dairy herds and poultry flocks, Canadian officials have announced that a ...

when it started a swine flu pandemic. That pandemic wasn’t as deadly as scientists initially feared, thanks to changes in the virus and our immunity. People and pigs seem to exchange viruses ...

The source of the H1N1 pandemic – also known as ‘swine flu’ – pigs have also been implicated as the source of other influenza outbreaks, and are described as being a “mixing vessel ...

The bird flu outbreak killed over 17,000 elephant seals, including almost 97% of the pups, and left a scar on this vulnerable population.