Bird flu detected in Yolo County backyard flock as public risk remains low, officials say
YOLO COUNTY – Yolo County officials announced Thursday that bird flu was detected in a backyard poultry flock, making it the first detection of bird flu in poultry in the county.
Health officials say the birds have either died or been euthanized, so there is no ongoing risk to other animals or humans. They also said it is likely that the infection was acquired outside of Yolo County.
Two people who were exposed to the birds are being monitored and remain asymptomatic.
"The detection of bird flu in a backyard poultry flock in Yolo County is not unexpected given the widespread nature of bird flu in California poultry and dairy cows," said Dr. Aimee Sisson, Yolo County's public health officer. "The risk to the general public from bird flu remains low, although people who work with dairy cows, poultry, or wildlife are at increased risk and should wear personal protective equipment when working with these animals."
Officials added that bird flu has been detected sporadically and at low levels in wastewater in Davis and Woodland since late November. They say this is likely related to dairy products.
Since August, there have been 38 human cases of bird flu in California, none of which have been spread person-to-person. All but two of those cases have occurred in dairy workers.
Since 2022, more than 23 million birds have been affected by bird flu.
Public health experts are warning the bird flu could evolve into something that could cause more severe disease or even spread person-to-person.
California Gov. Gavin Newsom issued an emergency proclamation in December in response to growing concerns over bird flu cases.