Studies suggest that people who had seasonal flus or vaccinations have low antibody levels against H5N1 bird flu.

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

Health officials in Kerala have confirmed that a student of class 9 in a school in Kollam has tested positive for H1N1 ...

H5N1 avian influenza has long been a concerning virus. Since its discovery in 1996 in waterfowl, bird flu has occasionally caused isolated human cases that have quite often been fatal. The absolute ...

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

An epidemiologist makes the case that a rush of research to stop a swine flu outbreak led to an accidental lab release of an extinct virus. Preparing for one pandemic triggered a different one.

For more information about swine flu symptoms, treatment and prevention, check out the ABC News OnCall+ Swine Flu Center. "Kissing with masks isn't going to happen," said Horovitz.

NEW YORK — More U.S. children have died this flu season than at any time since the swine flu pandemic 15 years ago, according to a federal report released Friday.

The Askhams, U.K.'s first confirmed swine flu cases, have now made a complete recovery and have left Monklands hospital, where they were being treated.

Bird flu isn’t as silent as we think — experts caution the pandemic threat is still growing It's been months since a major update in H5N1 news, but that doesn't mean the virus has disappeared ...