State officials have confirmed an avian flu outbreak in Northern Colorado.

State officials are confirming a suspected outbreak of avian flu among chickens at a large commercial egg farm in Weld County ...

A new nasal spray vaccine for H5N1 bird flu has shown promising early results, raising hopes it could one day be used to help ...

Veterinarians and agriculture experts are warning Colorado flock owners to be cautious as high pathogen avian influenza is ...

Dozens of migrating birds were found dead or dying at an Amarillo playa lake over the weekend. Avian influenza is suspected. What to know about HPAI.

Suffolk Owl Sanctuary falls within the disease protection zone and is limiting its activities.

Lt. Gov. Dianne Primavera verbally declared a disaster in Weld County for an outbreak of highly pathogenic avian influenza.

A suspected case of highly pathogenic avian influenza was found at a poultry farm.

A new nasal spray vaccine could stop bird flu at the door — blocking infection, reducing spread, and helping head off the next pandemic.

The New York State Department of Environmental Conservation (DEC) announced Thursday that it had five preliminary positive cases of highly pathogenic avian influenza, or bird flu, in Suffolk County.

Chickens at a Weld County egg-laying facility have tested positive for avian influenza. State officials were notified that dead chickens at a Weld County commercial egg-laying facility, which houses ...

Prior seasonal influenza virus immunity did not impair antibody responses or protection conferred by the intranasal H5N1 vaccine.