Reassortment of the influenza A virus occurs frequently throughout its evolutionary history, according to a new study published February 29 in the open-access journal PLoS Pathogens. Researchers at ...

Influenza viruses are shifty entities. They accumulate small genetic changes on a regular basis, necessitating yearly updates to the flu vaccines because the prior year’s strain may not look much like ...

A scientist harvests H7N9 virus growing in bird eggs. The Centers for Disease Control and Prevention received samples of the virus from China. — James Gathany/CDC/Douglas E. Jordan / (CC0 1.0) A ...

The US Centers for Disease Control and Prevention announced Tuesday a $5 million initiative to offer seasonal flu vaccines to livestock workers in order to reduce the public health concern that a new ...

A newly identified strain of bird flu, H5N9, discovered at a California duck farm, has prompted concerns about the possibility of a larger outbreak, The Washington Post reported Jan. 29. Health ...

The threat: zoonotic influenza viruses originating in animals such as birds and pigs are a significant public health challenge. Influenza A viruses, including H5N1 and H1N1, can cross species barriers ...

A strain of bird flu never seen before in the United States has been detected among poultry at a California farm. The virus, called highly pathogenic H5N9, is a type of avian influenza, otherwise ...

A new scientific article, titled "Swine influenza surveillance in Italy uncovers regional and farm-based genetic clustering", has been published by Istituto Zooprofilattico Sperimentale delle Venezie ...

Vaccination programs, though widely used, do not provide sterilizing immunity, threatening vaccinated flocks to harbor ...

Emaraviruses comprise a genus of negative-sense RNA viruses that inflict a range of serious diseases on plants worldwide. These pathogens are marked by segmented genomes and enveloped virions, and ...