bird flu

Reports of three new human cases of bird flu include California child

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.

One mutation could make H5N1 a greater threat, researchers say

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.

Raw Farm recalls all unpasteurized whole milk and cream products

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.

Bird flu hits California farms hard in November

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.

California finds bird flu virus in raw milk

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.

Bird flu cuts into egg production

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.

California child with no known contact with infected animals tests positive for bird flu

A child in populous Alameda County tested positive for the avian influenza virus and was recovering at home from mild upper respiratory symptoms, said California public health officials on Tuesday. The child had no known contact with an infected animal and would be the second such case in the United States this year.

First human case of bird flu in Oregon, as U.S. total rises to 52

Public health officials confirmed six additional cases of bird flu infection of farmworkers, five in California and one in Oregon, raising the U.S. total to 52 this year. The Oregon infection was the first in the state and was tied to an outbreak of the H5N1 avian flu virus at an egg farm in Clackamas County, southeast of Portland. (No paywall)

U.S. tally of bird flu infections in people rises to 44

Three additional dairy farmworkers in California contracted bird flu, raising the state total to 20 cases and the U.S. tally to 44 people since March, said the Centers for Disease Control on Monday. "To date, person-to-person spread of H5 bird flu has not been identified in the United States" and the risk to the general public remained low, said the agency.

Two additional human cases of bird flu boost U.S. total to 41

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.

First U.S. case of bird flu in swine is found in Oregon

Agriculture officials culled all poultry and hogs on a small backyard farm in central Oregon following an outbreak of bird flu that included the first confirmed infection of the H5N1 virus in swine in the United States. There was no threat to the U.S. meat supply, said the Agriculture Department on Wednesday.

USDA confident of eradicating virus, although bird flu count keeps climbing

Thirty people have contracted bird flu from exposure to infected animals this year, and more cases are expected, said the Centers for Disease Control on Thursday. At the same briefing, the USDA said it was confident of eradicating the viral disease in dairy herds despite the ever-rising number of outbreaks in California.

Poultry workers treated for avian flu infections in Washington State

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.

Five additional human cases of bird flu in California, more expected

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.

Bird flu: 20 people ill, 300 herds infected since March

In the nearly seven months since bird flu was identified in dairy cattle in Texas, the virus has infected 20 people — all but one of them livestock workers — and been found in 300 herds in 14 states from North Carolina to California. "The epidemiology of the situation continues to suggest sporadic instances of animal-to-human spread," rather than the virus gaining power to spread among people, said the Centers for Disease Control.

Five California farmworkers have mild cases of bird flu, says state

On the same day the CDC confirmed the third human case of bird flu in California, state officials said Wednesday that they had identified two more possible infections, also farmworkers in the Central Valley. In less than six weeks, California has become the U.S. hot spot for bird flu, with one-third of all the infected dairy herds in the country and all of the human cases since Sept. 6.

USDA: slowdown in detections suggests bird flu is being contained in cattle

Although California reported outbreaks of bird flu in 12 dairy herds last week, most states have gone weeks without new cases being discovered, including those with high levels of scrutiny, according to USDA data. Agriculture deputy undersecretary Eric Deeble cited Colorado and Michigan as examples of the tailing off of infections and said during a multi-agency teleconference that "this decrease gives us confidence" of eliminating the virus in dairy cattle by isolating herds. (No paywall)

Five Missouri healthcare workers with respiratory symptoms to be tested for bird flu

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.

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