# First Highly Pathogenic Avian Influenza Outbreak of 2026-2027 Winter Season Confirmed at Yeoncheon Layer Farm, Nationwide Biosecurity Measures Intensified

> South Korea confirmed its first highly pathogenic avian influenza case of the 2026-2027 winter season at a layer farm in Yeoncheon, Gyeonggi Province, housing about 91,000 birds. Authorities imposed a 24-hour nationwide poultry movement standstill and a two-week disinfection campaign.

- Date: 2026-11-04 · published 2026-11-05T12:12:16.313Z
- Category: disease · region South Korea · magnitude low
- Page: https://feedsoft.ai/events/81688-first-highly-pathogenic-avian-influenza-outbreak-of-2026-2027-winter-season
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md)

## Why it matters

Layer losses and movement limits can tighten domestic egg supply and raise feed demand for layer rations. Effects on global feed prices are likely small unless outbreaks spread widely.

## Read by commodity

- CORN: neutral

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2016-11-01 | [Biosecurity Education and Compliance are Critical in Preventing Avian Influenza Outbreaks \| USDA](https://feedsoft.ai/events/73878-biosecurity-education-and-compliance-are-critical-in-preventing-avian-influenza.md) | +1.9% | -4.3% |
| CORN | 2026-04-07 | [Animal health update: highly pathogenic avian influenza (April 7, 2026) \| Animal health updates and veterinary advisories \| ontario.ca](https://feedsoft.ai/events/15915-animal-health-update-highly-pathogenic-avian-influenza-april-7-2026-animal.md) | -2.5% | +3.0% |
| CORN | 2022-11-03 | [U.S. Approaches Record Number of Avian Influenza Outbreaks in Wild Birds and Poultry \| Bird Flu \| CDC](https://feedsoft.ai/events/16231-u-s-approaches-record-number-of-avian-influenza-outbreaks-in-wild-birds-and.md) | -0.6% | -3.9% |
| 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 | 2022-12-03 | [Epidemiological Update- Outbreaks of avian influenza and public health implications - 3 December 2022 - PAHO/WHO \| Pan American Health Organization](https://feedsoft.ai/events/16223-epidemiological-update-outbreaks-of-avian-influenza-and-public-health.md) | -0.2% | +4.7% |

## Sources

- insights.tridge.com: https://insights.tridge.com/speaker-product-news-reports/KJLyFXpzJzgKuB1Gqsm5QUKHGgR43AVdqLF5QFahZaEMvdy9PCsuhhae

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