Washington dairy worker's death marks first US bird flu fatality of 2026

A Yakima County, Washington, resident with underlying health conditions has died after becoming infected with H5N1 avian influenza through exposure to dairy cattle, state and local health officials said this week. It is the first bird flu death recorded in the United States in roughly a year and only the third since the virus began spreading widely among American dairy herds in 2024.

The Yakima Health District said the person died on Nov. 1 after being hospitalized. Officials have not released the patient's age, sex or occupation, citing privacy rules, but said the person had contact with cattle at a dairy where cows had tested positive for the virus. The death was confirmed through testing coordinated with the Centers for Disease Control and Prevention, which tracks human cases of the virus nationally.

A third fatality, a different strain pattern

The Yakima death brings the number of H5-subtype avian influenza deaths recorded in the United States since 2024 to three. A Louisiana resident died of H5N1 in January 2025, and an older adult in Grays Harbor County, Washington, died last November after contracting H5N5, a related but distinct subtype traced to a backyard poultry flock. The new case is the second fatality specifically tied to H5N1 and the first bird flu death of any kind recorded in 2026, according to reporting corroborated by the University of Minnesota's Center for Infectious Disease Research and Policy and local coverage from Fox 13 Seattle, which cited The Associated Press.

Yakima County has now logged three confirmed human H5N1 cases since mid-October: the first in a dairy worker identified early in the month, a second mild case that did not require hospitalization, and the case that proved fatal. The CDC's national situation summary, last updated in mid-October before this death, put the cumulative U.S. human case count at 72 since routine tracking began in February 2024, with two deaths recorded up to that point. The agency continues to describe the risk to the general public as low, while noting it is "watching the situation carefully."

On the animal side, Washington's outbreak has grown quickly since it was first detected. The Washington State Department of Agriculture confirmed the state's first H5N1 infections in two Yakima County dairy herds on Oct. 8. By the end of October, tracking differed slightly between agencies, but the state's herd tracker counted roughly three dozen infected herds in Yakima County and one in neighboring Benton County, where the virus turned up on Oct. 23. Nationally, dairy cattle in 19 states have been infected since the outbreak in cows was first identified in March 2024, according to figures reported through the U.S. Department of Agriculture's Animal and Plant Health Inspection Service, which maintains the federal count of confirmed livestock detections.

How the virus reached Washington's dairies

Highly pathogenic avian influenza has circulated in U.S. poultry for years, but its jump into dairy cattle beginning in the spring of 2024 opened a new and closely watched pathway toward human infection. Cows typically show reduced milk production, thickened milk and lethargy rather than the high mortality seen in poultry, which has allowed the virus to spread between herds before infections are caught. Washington was a comparatively late addition to the list of affected states; the Pacific Northwest's large dairy industry, concentrated in the Yakima Valley, had gone unaffected for more than two years before this fall's detections.

Genetic sequencing of virus samples from two of the affected Yakima County farms found no evidence that the virus has adapted to spread more easily between mammals or between people, Washington agriculture officials said, a finding consistent with the CDC's broader surveillance data. Health authorities emphasize that pasteurization inactivates the virus, and that the primary consumer-facing risk comes from raw, unpasteurized milk and dairy products rather than from grocery-store milk, which is required to be pasteurized before sale.

Officials stress low risk to the public, higher concern for farmworkers

Yakima Health District Health Officer Dave Atteberry said the risk to the general public "remains low" but cautioned that the virus "can cause severe illness, particularly among people who have underlying health conditions" — a description that matches the profile of the person who died. The health district is contacting people who had close contact with the patient to monitor for symptoms and offer testing.

Outside experts have pointed to the recurring pattern of infection among farmworkers as the more persistent concern. Peter Rabinowitz, a physician and co-director of the University of Washington's Center for One Health Research, told Newsweek that the virus remains "not effective at all in spreading from person to person," but warned that continued circulation among cattle raises the odds of a mutation that changes that calculus over time.

"As long as we continue to allow the virus to spread and infect new hosts, including in the dairy cattle population, and from there into farmworkers, we're going to continue to see these kinds of jumps and this kind of evolution of the virus," Rabinowitz said.

The people most exposed to risk are dairy and agricultural workers who handle sick animals, unpasteurized milk or contaminated equipment without protective gear. State agriculture officials have asked farmers to separate sick cattle, keep milk from affected animals out of the bulk supply and report symptoms such as reduced feed intake, fever and dropping milk output promptly. The Washington State Department of Health has reiterated longstanding guidance advising consumers to avoid raw milk and raw dairy products, and to keep children, older adults and people with weakened immune systems away from sick or dead birds and other animals.

What comes next

Washington's outbreak is still active. State agriculture officials have said they will issue a public notice whenever H5N1 is confirmed in a new county, and testing is continuing at affected Yakima and Benton county dairies as well as neighboring farms. The Yakima Health District's contact-tracing effort around the fatal case was ongoing as of this week, and health officials said they had not identified any additional infections among the patient's close contacts.

Nationally, the case adds fresh urgency to long-running questions about surveillance gaps and protections for farmworkers, who are frequently exposed to the virus well before human cases are confirmed through testing. The CDC has said it continues to work with Washington and other affected states to monitor people with animal exposures, track genetic changes in circulating virus samples, and update its situation summary as new human cases are identified. No changes to federal travel guidance or commercial milk-safety requirements have been announced as a result of the Yakima County case.