Even with limited data, researchers fear the presently overlooked pair represent "a major threat to public health." ...

A new mutation of influenza A is on the rise, causing concern among public health officials.

A new study has shown that person-to-person variation in antibody immunity plays a key role in shaping which influenza (flu) strains dominate in a population. The work, published today as a Reviewed ...

A new flu strain has been detected, with the variant dubbed influenza A subclade K. How severe is the strain and does the vaccine protect against it?

Researchers believe that these developments remind us of past lessons, indicating that a virus of animal origin that acquires ...

The ecology of Influenza viruses, particularly influenza A viruses (FLUAV), is complex and involves many different species, including wild birds, poultry, pigs, horses, dogs, marine mammals, and ...

Flu strikes every winter, but something seems to be different this year. A seasonal flu virus suddenly mutated in the summer; it appears to evade some of our immunity; has kick-started a flu season ...

Each year, public health officials monitor the spread of influenza to identify which flu strains need to go into that year's vaccines and where outbreaks will occur. But it can be difficult to predict ...

Additional outbreaks of highly pathogenic avian influenza (HPAI) in commercial poultry have been confirmed by these countries over the past two weeks.