H5N1 avian influenza is highly pathogenic and has been devastating bird populations worldwide. It continues to do so, and is also moving into new animals, like skunks, bears, raccoons, cats, and dairy ...

Colorized transmission electron micrograph of influenza A/H3N2 virus particles, isolated from a patient sample and then propagated in cell culture. Influenza A virus particles adapt shape—as filaments ...

What’s the difference between influenza A and influenza B, and does it matter which you catch? By Knvul Sheikh Each fall and winter, the flu emerges as a formidable force, spreading through the ...

Influenza viruses are common, and the seasonal flu tends to infect many people every year. Influenza A viruses are the most common kind of human influenza virus, and they usually infect cells in the ...