This marks the state’s first human case of bird flu. The Oregon Health Authority said the case is linked to an outbreak in chickens at a commercial egg farm in Clackamas County last month.

New CDC research suggests that a small but significant percentage of dairy farmers working near infected cows have recently contracted H5N1, often without knowing.

The presentation, so brief as to be little more than a public service announcement, signals an abandonment of efforts to prevent the emergence of a wider avian flu pandemic.

A teenager in Canada, hospitalized with the country's first case of the H5N1 bird flu, is in critical condition. Health officials report his condition deteriorated rapidly despite having no prior health issues.

A teenager in British Columbia, Canada has been hospitalized with a presumed case of H5N1 bird flu, the first detected human case in the country in the current outbreak.

The first human case of H5N1 bird flu has been discovered in Fresno County. The county’s first case came from someone who had contact with infected cattle at a dairy farm in the Central Valley.

British Columbia health officials have yet to identify a likely source of the infection, though none of the teen's contacts have tested positive for the virus so far.

Health officials have announced six more H5N1 bird flu infections in humans: five in California and the first known case in Oregon.

The U.S. Centers for Disease Control and Prevention (CDC) on Friday confirmed highly pathogenic form of bird flu in a person in Oregon. The infected person is linked to a previously reported outbreak tied to a commercial poultry operation in the state,

The Centers for Disease Control and Prevention (CDC) announced that an unnamed individual in Oregon contracted bird flu pathogens in the first case in the state on Friday. The person was linked to a previously reported outbreak affecting birds at a commercial poultry operation in Clackamas County.