# A second version of bird flu is infecting cows. What does that mean?

> USDA announced that dairy cattle in Nevada tested positive for the H5N1 D1.1 variant, the first detection of this variant in dairy cattle. The B3.13 variant has already affected nearly 1,000 herds across 16 states.

- Date: 2025-02-06 · published 2025-02-06T12:00:00.000Z
- Category: disease · region US · magnitude low
- Page: https://feedsoft.ai/events/16026-a-second-version-of-bird-flu-is-infecting-cows-what-does-that-mean
- Commodities: [Lean Hogs](https://feedsoft.ai/c/HOGS.md), [Chicken](https://feedsoft.ai/c/CHICKEN.md), [Soybean Meal](https://feedsoft.ai/c/SBM.md)

## Why it matters

A second independent spillover into dairy herds could extend milk output losses, though current evidence points to a limited near-term effect on milk supply.

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| HOGS | 2025-02-26 | [As bird flu spreads to cows and infected people, here’s what to know about the latest avian flu strains \| College of Veterinary Medicine](https://feedsoft.ai/events/16025-as-bird-flu-spreads-to-cows-and-infected-people-here-s-what-to-know-about-the.md) | -2.3% | -0.2% |
| HOGS | 2024-06-25 | [What Can Farmers Learn From the Current Bird Flu Outbreak in Dairy Cows?](https://feedsoft.ai/events/16087-what-can-farmers-learn-from-the-current-bird-flu-outbreak-in-dairy-cows.md) | -0.8% | +2.6% |
| HOGS | 2021-11-22 | [Bird flu: What is avian influenza, how does it spread, which viruses infect humans and should we be worried? - ABC News](https://feedsoft.ai/events/16327-bird-flu-what-is-avian-influenza-how-does-it-spread-which-viruses-infect-humans.md) | -2.5% | +4.1% |
| HOGS | 2024-03-27 | [Bird flu discovered in U.S. dairy cows is ‘disturbing’ \| Science \| AAAS](https://feedsoft.ai/events/16112-bird-flu-discovered-in-u-s-dairy-cows-is-disturbing-science-aaas.md) | +1.0% | +12.1% |
| HOGS | 2024-06-28 | [Q&A: Could vaccinating birds, cows stop bird flu outbreak?](https://feedsoft.ai/events/16089-q-and-a-could-vaccinating-birds-cows-stop-bird-flu-outbreak.md) | +0.2% | +3.6% |
| SBM | 2024-08-19 | [Just as inflation cools, bird flu is driving up the price of eggs](https://feedsoft.ai/events/28792-just-as-inflation-cools-bird-flu-is-driving-up-the-price-of-eggs.md) | +0.8% | +3.9% |
| SBM | 2025-02-26 | [As bird flu spreads to cows and infected people, here’s what to know about the latest avian flu strains \| College of Veterinary Medicine](https://feedsoft.ai/events/16025-as-bird-flu-spreads-to-cows-and-infected-people-here-s-what-to-know-about-the.md) | -2.1% | +0.9% |
| SBM | 2024-06-25 | [What Can Farmers Learn From the Current Bird Flu Outbreak in Dairy Cows?](https://feedsoft.ai/events/16087-what-can-farmers-learn-from-the-current-bird-flu-outbreak-in-dairy-cows.md) | -1.8% | -7.4% |

## Sources

- sciencenews.org: https://www.sciencenews.org/article/bird-avian-flu-virus-infect-dairy-cows

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