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

Colorado officials declared a disaster emergency after a presumptive bird flu outbreak hit a facility with 1.3 million ...

Colorado Lt. Gov. Primavera, as acting governor, issued a verbal disaster declaration for avian flu in Weld County.

Colorado Lt. Gov. Dianne Primavera issued a verbal disaster declaration Thursday night for an outbreak of "highly pathogenic ...

Colorado State University tested samples from the Weld County laying facility and gave presumptive positive results, which ...

Colorado quietly flipped into disaster mode Thursday night, after a suspected bird flu outbreak at a massive Weld County egg ...

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

Colorado Lt. Gov. Primavera, as acting governor, issues a verbal disaster declaration for avian flu outbreak in Weld County.

Since it was first detected in the U.S. in 2014, H5N1 avian influenza, commonly known as bird flu, has jumped from wild birds ...

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

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

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