Moderna will not be developing a vaccine to protect against bird flu — at least on the federal government’s dime. The U.S. Department of Health and Human Services canceled a contract with the pharmaceutical company worth close to $600 million to propel the vaccine’s creation.

For poultry flocks, the summer should be "quiet" for infections, with the number of outbreaks falling in recent weeks, Sifford said. Wild birds can transmit the virus to poultry flocks, which are then culled to contain outbreaks.

Over the past three years, avian influenza (H5N1) has spread around the U.S. and affected many species of birds and mammals, including humans. Experts at a recent webinar offered answers to common questions about the disease — how it spreads,

The Gs/Gd lineage of highly pathogenic H5 avian influenza viruses—including H5N1—has rapidly evolved, spreading globally and infecting a growing range of birds, mammals, and occasionally humans. This review highlights the expanding risks,

Avian influenza is no longer just an animal health issue, with rising mammal cases and severe ecosystem, trade, and food security impacts as outbreaks become more widespread and impact a broader range of species,