"The Chinese poultry lineage may have experienced more vaccine-driven selection compared to other lineages," the researchers wrote.

Georgia, the top US chicken-producing state, confirmed its second recent case of bird flu in a commercial poultry flock, ...

The Centers for Disease Control and Prevention are monitoring the bird flu situation in the United States. Here's what to ...

Philadelphia health officials say a goose found next to Carroll Park in West Philadelphia had highly infectious bird flu.

A sick snow goose found in West Philadelphia earlier this month has tested positive for the avian influenza A(H5), making it the first bird in the city to test positive for the highly-pathogenic bird ...

President Trump revived disputed claims of broad presidential authority from his first term — and made some new ones. Court battles seem likely. 6 min read Trump’s First Day Back, in Photos 3 ...