Despite health officials’ arduous efforts to track human infections, surveillance is marred by delays, inconsistencies, and ...

During an avian flu outbreak, “The chance of infected poultry or eggs entering the food chain is low,” the FDA said on its ...

Human bird flu cases in California may be undercounted as farm workers avoid testing due in part to economic concerns, ...

As H5N1 bird flu continues to spread wildly among California dairy herds and farmworkers, federal health officials on ...

Dairy industry experts say the virus entered California after local cows were shipped to another state and then returned to ...

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 ...

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

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

Concerns about bird flu — officially known as avian influenza A (H5) — continue to mount, particularly in California.

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