# Oregon logs its first H5N1 case in cows; farmer’s union says human avian flu cases underreported in Washington

> USDA's APHIS announced the first detection of H5N1 avian flu in a dairy herd in Oregon, found through ongoing surveillance. The agency said the herd had tested negative in routine testing before this detection. The United Farm Workers union said human H5N1 cases among Yakima Valley dairy workers are underreported.

- Date: 2026-11-12 · published 2026-11-13T00:18:30.531Z
- Category: disease · region US · magnitude low
- Page: https://feedsoft.ai/events/96744-oregon-logs-its-first-h5n1-case-in-cows-farmer-s-union-says-human-avian-flu
- Commodities: [Milk (Class III)](https://feedsoft.ai/c/MILK.md)

## Why it matters

USDA and FDA say the detection does not affect the safety of the commercial milk supply, so the direct effect on milk and feed demand is limited. Spread to more herds could still raise herd-management costs and add pressure on dairy output over time.

## Read by commodity

- MILK: neutral

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| MILK | 2024-04-28 | [Influenza A (H5N1) of avian origin in domestic livestock in the USA - GOV.UK](https://feedsoft.ai/events/16098-influenza-a-h5n1-of-avian-origin-in-domestic-livestock-in-the-usa-gov-uk.md) | +18.6% | +19.7% |
| MILK | 2024-04-03 | [Bird flu hits Texas dairy cows, hens, human as ducks migrate](https://feedsoft.ai/events/16103-bird-flu-hits-texas-dairy-cows-hens-human-as-ducks-migrate.md) | -4.7% | -5.0% |
| MILK | 2025-07-23 | [Current Situation: Bird Flu in Dairy Cows \| Bird Flu \| CDC](https://feedsoft.ai/events/15983-current-situation-bird-flu-in-dairy-cows-bird-flu-cdc.md) | -0.6% | +0.1% |
| MILK | 2024-07-10 | [Bird flu response in Michigan sparks COVID-era worry on farms \| Reuters](https://feedsoft.ai/events/29269-bird-flu-response-in-michigan-sparks-covid-era-worry-on-farms-reuters.md) | -0.1% | +2.6% |
| MILK | 2024-10-30 | [Protect Livestock and Public Health from H5N1 Avian Influenza \| APHIS](https://feedsoft.ai/events/16051-protect-livestock-and-public-health-from-h5n1-avian-influenza-aphis.md) | -12.3% | -12.6% |

## Sources

- cidrap.umn.edu: https://www.cidrap.umn.edu/avian-influenza-bird-flu/oregon-logs-its-first-h5n1-case-cows-farmer-s-union-says-human-avian-flu

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.