bird flu

California state agriculture officials ordered the recall of raw milk from a dairy farm in the Central Valley after tests found bird flu virus in a sample from the farm's bulk tank. The state Department of Food and Agriculture warned against consumption of milk from Valley Milk Simply Bottled on the grounds that it "may lead to infection with this rare, emerging flu virus." No illnesses were reported.

A resident of southwestern Louisiana was hospitalized with what appeared to be the state's first case of bird flu in a person, said state health officials. Sixty people in seven states have contracted mild cases of the viral disease this year, according to the CDC.

Arizona health officials said two workers employed at poultry farms have recovered from mild cases of bird flu while the public health agency in Marin County, north of San Francisco, said it was investigating a possible bird flu infection of a child. If confirmed by the CDC, the U.S. total for bird flu infections would rise to 61 people in eight states this year.

While there has been no sign of person-to-person spread of bird flu, researchers said on Thursday that a single mutation in the H5N1 avian influenza virus could enhance the virus’ ability to attach to human cells. That could potentially increase the possibility of transmission among humans, said the study, led by a team of scientists at the Scripps Research Institute.

A Fresno dairy recalled all of its unpasteurized whole milk and cream products following “multiple bird flu detections in the company’s milk and dairy in the past week,” said the California Department of Public Health. Meanwhile, on Wednesday, the Centers for Disease Control confirmed the 32nd human case of bird flu in the state.

The avian influenza virus was identified in 100 dairy herds in the past week and in two dozen domestic flocks with more than 3 million birds so far this month in California, the U.S. hot spot for the viral disease, said state and USDA data on Tuesday. The state accounts for two-thirds of the 650 infected dairy herds in the nation.

Public health officials in California's Silicon Valley said tests found the bird flu virus in a container of raw milk purchased at a local store and warned consumers on Sunday not to consume the milk. The supplier, Raw Farm, of Fresno County, issued a recall of the batch of milk that was involved.

Fewer table eggs will be available for home consumption this year because of continuing outbreaks of highly pathogenic avian influenza at U.S. egg farms this fall, said USDA economists, who estimated that table egg production this year would be 1 percent less than in 2023.

The Centers for Disease Control said 41 people, two more than previously confirmed, have contracted bird flu in the seven months since the viral disease first was identified in dairy cattle in Texas. One of the new cases was in California and the other was listed as "jurisdiction pending" in a CDC tally.

Four workers tested positive for the avian flu virus after culling chickens at an egg farm in southeastern Washington state — the first human cases reported in the Pacific Northwest. The diagnoses potentially raise the U.S. total to 31 since late March, though "the number of cases under investigation may change" as more people are tested, said the state Department of Health.

With five new cases, California accounts for 11 of the 25 cases of human infection by the bird flu virus in the United States this year, said the Centers for Disease Control on Thursday. Additional cases were expected among individuals in contact with infected dairy cattle, said the California Department of Food and Agriculture.

Blood samples from five healthcare workers in Missouri will be tested for exposure to the avian flu virus, said the Centers for Disease Control in a weekly update on bird flu. The workers developed mild respiratory symptoms while involved in treatment of a patient infected with the H5N1 virus but who had no known contact with animals.