# Bird flu: What is avian influenza, how does it spread, which viruses infect humans and should we be worried? - ABC News

> An explainer describes avian influenza, how it spreads from wild birds to poultry, and which subtypes have infected humans. It notes Japan's third outbreak of the winter season and severe outbreaks across Europe and Asia.

- Date: 2021-11-22 · published 2021-11-22T12:00:00.000Z
- Category: disease · region Global · magnitude low
- Page: https://feedsoft.ai/events/16327-bird-flu-what-is-avian-influenza-how-does-it-spread-which-viruses-infect-humans
- 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

The article is background on a continuing disease situation and does not report a new supply change or price driver.

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| HOGS | 2025-06-18 | [Four reasons why avian influenza should be on your radar](https://feedsoft.ai/events/15990-four-reasons-why-avian-influenza-should-be-on-your-radar.md) | +2.3% | -2.7% |
| HOGS | 2025-02-06 | [A second version of bird flu is infecting cows. What does that mean?](https://feedsoft.ai/events/16026-a-second-version-of-bird-flu-is-infecting-cows-what-does-that-mean.md) | +3.1% | +1.5% |
| HOGS | 2024-06-24 | [What You Should Know About Avian Influenza A (H5N1) \| ASM.org](https://feedsoft.ai/events/16082-what-you-should-know-about-avian-influenza-a-h5n1-asm-org.md) | -1.9% | -0.0% |
| 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 | 2025-04-01 | [Cow-derived avian flu can infect pigs but doesn't spread among them, preprint suggests](https://feedsoft.ai/events/16016-cow-derived-avian-flu-can-infect-pigs-but-doesn-t-spread-among-them-preprint.md) | +0.0% | +3.6% |
| SBM | 2025-06-18 | [Four reasons why avian influenza should be on your radar](https://feedsoft.ai/events/15990-four-reasons-why-avian-influenza-should-be-on-your-radar.md) | -2.9% | -5.5% |
| SBM | 2025-02-06 | [A second version of bird flu is infecting cows. What does that mean?](https://feedsoft.ai/events/16026-a-second-version-of-bird-flu-is-infecting-cows-what-does-that-mean.md) | -3.9% | -4.4% |
| SBM | 2024-06-24 | [What You Should Know About Avian Influenza A (H5N1) \| ASM.org](https://feedsoft.ai/events/16082-what-you-should-know-about-avian-influenza-a-h5n1-asm-org.md) | -0.9% | -5.6% |

## Sources

- abc.net.au: https://www.abc.net.au/news/science/2021-11-23/bird-flu-avian-influenza-disease-chickens-poultry-animals-humans/100627498

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