A patient in Yakima County with pre-existing medical conditions has become the initial fatality linked to avian influenza nationwide this year. Public health authorities are keeping track of individuals who had close exposure, noting that the threat to the general population stays minimal.
A Yakima County resident who caught avian influenza from infected dairy cattle has died, the Yakima Health District announced on Sunday, November 1. The death is the first from bird flu in the United States this year and the third since human infections tied to the current animal outbreaks began in 2024, according to CNN.
The district withheld the individual’s identity, age, and gender to protect familial privacy. Through its November 1 statement, officials disclosed that the patient suffered from pre-existing medical issues, contracted the virus after exposure to contaminated dairy cattle located in Yakima County, and was admitted to the hospital suffering from critical symptoms. That hospital admission had been made public by county authorities the day prior, coinciding with the confirmation of their second documented human infection.
The same statement disclosed a third confirmed case in a county resident. That person has not been severely ill and has not been hospitalized.
Three cases tied to infected dairy herds
All three Yakima County cases were identified within roughly two and a half weeks, and each followed exposure to infected cows.
| Announced | Exposure | Illness reported by officials | Status |
|---|---|---|---|
| Oct. 15 | Infected cattle at a county dairy | Mild symptoms; no hospitalization required | Recovering in home isolation |
| Oct. 31 | Infected cattle at a county dairy | Severe manifestation; hospital admission; pre-existing health issues | Deceased (reported Nov. 1) |
| Nov. 1 | Infected cattle | Mild symptoms; no hospitalization required | Outpatient care |
The county’s releases do not state the subtype of the virus that infected the three people. The herds themselves carry highly pathogenic H5N1. Federal and state laboratories first confirmed the virus on two Yakima County dairies on October 8, the first known detection in cattle anywhere in Washington. By October 29, 33 dairy herds in the county had tested positive, the health district said.
Washington’s cattle cases arrived more than two years into a national outbreak. When the first Yakima herds were confirmed, the district noted that dairy cattle in 19 states had been infected since the outbreak began in March 2024.
Contact tracing and what “low risk” means
Public health workers are keeping track of individuals who experienced close contact with the patients to watch for signs of illness, collaborating alongside impacted dairy farms to locate employees potentially exposed to infected livestock. Testing is currently made available for any exposed individual who starts showing symptoms. Furthermore, the district noted that it has partnered with various organizations to supply protective gear to dairy facilities for their staff members.
Officials describe the risk to the general public as low. The people at greater risk, according to the district, are dairy workers and others with close or prolonged contact with infected animals or contaminated environments. Human-to-human transmission of the virus is extremely rare and has never been documented in the United States, the district said.
Dr. Dave Atteberry, the district’s health officer, said that while public risk remains low, “we are taking this situation seriously.”
Nationally, the Centers for Disease Control and Prevention counted 72 human cases reported since February 2024 in its most recent situation summary, updated October 15, and described the current public health risk as low. Most people infected in the US worked on farms with infected cattle or poultry, and most illnesses have been mild, CNN reported.
Previous fatalities in the US were connected to backyard poultry
The initial US fatality occurred in January 2025, following a report from Louisiana stating that an individual over the age of 65 with pre-existing health issues had passed away after contracting a severe case of H5N1. At that time, the CDC announced that no evidence of transmission between humans had been detected. Contact with deceased and infected poultry within a backyard flock had previously been documented for that patient.
The second death was also in Washington. In November 2025, an older adult with underlying conditions in Grays Harbor County died after infection with H5N5, a subtype not previously known to have infected a person. He kept a backyard flock of domestic poultry that had been exposed to wild birds.
The Yakima County death differs from both in its source: it followed exposure to dairy cattle rather than birds.
What officials recommend
In its October 31 release on the second case, the health district listed precautions for workers and the public:
- Dairy workers who develop symptoms after possible exposure to cattle should contact a health care provider or the health district. Symptoms can include eye redness or irritation, fever, cough, sore throat, runny nose, body aches, headache and fatigue.
- Avoid touching sick or dead animals, animal waste and surfaces that may be contaminated.
- Pasteurized milk and dairy products are safe; raw or unpasteurized milk and dairy should be avoided.
- Do not feed pets raw milk, unpasteurized dairy or raw meat. Cats are highly susceptible to H5N1.
- Seasonal flu vaccination is recommended for everyone 6 months and older. It does not prevent bird flu but lowers the chance of being infected with both viruses at once.
- Isolate livestock that appear sick and contact a veterinarian and the Washington State Department of Agriculture.
State officials are also urging dairy workers to wear personal protective equipment and to report symptoms if they become ill, CNN reported.
The health district said it will post updates on its bird flu page every Monday and Thursday afternoon as the investigation continues.
