All of the state's cases have been linked to contact with infected dairy cows, officials said. No human-to-human transmission ...

However, there is urgent concern over dairy cows. In California’s Central Valley, the carcasses of dead cattle have been ...

Cows in California are dying at much higher rates from bird flu than in other affected states, industry and veterinary ...

Another five suspected cases of bird flu were reported today in California, where six cases have already been confirmed, ...

The state now has 11 cases of people catching the virus, as health officials monitor any further spread from poultry and ...

State health officials are confirming six human cases of the H5 bird flu, with five more potential cases awaiting official ...

A fourth person contracted bird flu in California amid outbreaks in the state’s dairy industry, state officials said Thursday ...

California has six confirmed human bird flu cases and health officials suspect five more among Central Valley dairy workers.

Five more people who presumably contracted the bird flu are being tested in California's Central Valley and are pending CDC testing.

The Centers for Disease Control and Prevention said Thursday California has confirmed a third human case of H5 bird flu. All ...

U.S. and California health officials confirmed two new cases of H5N1 bird flu in dairy farm workers in the state on Friday, ...

California is investigating five possible human cases of bird flu among dairy farm workers, in addition to the six cases ...