The spread of a highly infectious form of bird flu has wreaked havoc on the poultry industry and led egg prices to soar in grocery stores across the country.

Songbirds are much less likely than waterfowl to contract variants of avian influenza and less likely to shed large amounts of virus, meaning they do not transmit the disease easily. (For detailed ...

An outbreak of bird flu in Brazil, the world's largest chicken exporter, prompted countries to implement trade restrictions ...

The CDC declared the end of its emergency response to H5N1 avian flu as a health threat to humans, David Murray writes.

The fatality rate for H5N1 highly pathogenic avian influenza in humans has historically been high, with more than half of ...

The H5N1 bird flu virus has historically extracted a heavy toll when it infects humans, with nearly half of confirmed cases ...

Several local factors—including the minimum temperature reached in autumn, the water level in lakes and ponds in winter, and ...