# H5 avian influenza detected at South Korea layer farm

> South Korean authorities detected H5 avian influenza antigen at a layer farm in Yeoncheon County, Gyeonggi Province, holding about 91,000 hens. It is the first domestic poultry site to test positive this winter, and a nationwide standstill order was in effect from November 4 to 5 while pathogenicity testing proceeds.

- Date: 2026-11-04 · published 2026-11-04T21:12:05.825Z
- Category: disease · region Global · magnitude low
- Page: https://feedsoft.ai/events/80515-h5-avian-influenza-detected-at-south-korea-layer-farm
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md), [Soybean Meal](https://feedsoft.ai/c/SBM.md)

## Why it matters

Culling of layer flocks reduces egg supply and lowers demand for feed grains in South Korea, a modest effect on global markets. Spread to more farms could widen the impact and tighten local egg supply.

## Read by commodity

- SBM: neutral
- CORN: neutral

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2023-09-26 | [Over 50 avian influenza cases confirmed in South Africa \| SAnews](https://feedsoft.ai/events/16154-over-50-avian-influenza-cases-confirmed-in-south-africa-sanews.md) | +1.7% | +3.3% |
| CORN | 2021-04-26 | [Avian influenza: High losses in Poland](https://feedsoft.ai/events/47600-avian-influenza-high-losses-in-poland.md) | +13.6% | +6.9% |
| CORN | 2021-11-15 | [Japan, South Korea report avian flu in poultry flocks \| WATTPoultry.com](https://feedsoft.ai/events/44062-japan-south-korea-report-avian-flu-in-poultry-flocks-wattpoultry-com.md) | -2.1% | +1.5% |
| CORN | 2025-03-07 | [Avian Influenza in the U.S. impacts Mexico: chicken prices soar](https://feedsoft.ai/events/25730-avian-influenza-in-the-u-s-impacts-mexico-chicken-prices-soar.md) | +1.2% | +3.5% |
| CORN | 2026-10-06 | [South Korea's 2025-26 HPAI season cut layer flock by 13.6%
						 \| The Poultry Site](https://feedsoft.ai/events/17125-south-korea-s-2025-26-hpai-season-cut-layer-flock-by-13-6-the-poultry-site.md) | -1.8% | -5.6% |
| SBM | 2023-09-26 | [Over 50 avian influenza cases confirmed in South Africa \| SAnews](https://feedsoft.ai/events/16154-over-50-avian-influenza-cases-confirmed-in-south-africa-sanews.md) | -5.7% | +7.3% |
| SBM | 2022-06-30 | [Avian influenza: largest seasonal epidemic ever in Europe \| EFSA](https://feedsoft.ai/events/16266-avian-influenza-largest-seasonal-epidemic-ever-in-europe-efsa.md) | -0.8% | +4.4% |
| SBM | 2022-08-01 | [Avian influenza overview March – June 2022](https://feedsoft.ai/events/16251-avian-influenza-overview-march-june-2022.md) | +0.9% | -2.8% |

## Sources

- zootecnicainternational.com: https://zootecnicainternational.com/featured/h5-avian-influenza-south-korea-layer-farm/

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