# Mexico Notifies United States of New World Screwworm Detection | Animal and Plant Health Inspection Service

> On November 22, 2024, Mexico's Chief Veterinary Officer reported a New World screwworm detection in a cow at an inspection checkpoint in Chiapas, near the Guatemala border. USDA APHIS responded by restricting imports of animal commodities from or transiting Mexico with immediate effect.

- Date: 2024-11-24 · published 2024-11-24T12:00:00.000Z
- Category: disease · region Mexico · magnitude high
- Page: https://feedsoft.ai/events/27344-mexico-notifies-united-states-of-new-world-screwworm-detection-animal-and-plant
- Commodities: [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md), [Live Cattle](https://feedsoft.ai/c/LCATTLE.md)

## Why it matters

Blocking Mexican live cattle imports removes feeder supply from US feedlots, which tightens feeder and live cattle supplies and supports prices.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| FCATTLE | 2025-09-22 | [Mexico Confirms Case of New World Screwworm in Nuevo Leon \| Animal and Plant Health Inspection Service](https://feedsoft.ai/events/22806-mexico-confirms-case-of-new-world-screwworm-in-nuevo-leon-animal-and-plant.md) | -0.6% | +3.6% |
| FCATTLE | 2025-08-15 | [USDA Announces Sweeping Plans to Protect the United States from New World Screwworm \| USDA](https://feedsoft.ai/events/23277-usda-announces-sweeping-plans-to-protect-the-united-states-from-new-world.md) | +4.7% | +2.9% |
| FCATTLE | 2024-11-27 | [Cattle Imports from Mexico Restricted after New World Screwworm Detection \| Ohio BEEF Cattle Letter](https://feedsoft.ai/events/27350-cattle-imports-from-mexico-restricted-after-new-world-screwworm-detection-ohio.md) | -0.4% | +0.5% |
| FCATTLE | 2024-11-26 | [Import Alert: New World Screwworm Restrictions for Live Animals Originating from or Transiting Mexico](https://feedsoft.ai/events/27345-import-alert-new-world-screwworm-restrictions-for-live-animals-originating-from.md) | +1.5% | +0.1% |
| FCATTLE | 2025-07-10 | [Secretary Rollins Takes Decisive Action and Shuts Down U.S. Southern Border Ports to Livestock Trade due to further Northward Spread of New World Screwworm in Mexico \| USDA](https://feedsoft.ai/events/23699-secretary-rollins-takes-decisive-action-and-shuts-down-u-s-southern-border.md) | +1.6% | +7.7% |
| LCATTLE | 2025-09-22 | [Mexico Confirms Case of New World Screwworm in Nuevo Leon \| Animal and Plant Health Inspection Service](https://feedsoft.ai/events/22806-mexico-confirms-case-of-new-world-screwworm-in-nuevo-leon-animal-and-plant.md) | -0.8% | +0.3% |
| LCATTLE | 2025-08-15 | [USDA Announces Sweeping Plans to Protect the United States from New World Screwworm \| USDA](https://feedsoft.ai/events/23277-usda-announces-sweeping-plans-to-protect-the-united-states-from-new-world.md) | +1.1% | -0.1% |
| LCATTLE | 2023-02-27 | [The National Directorate of Animal Health, in response to the unusual increase in cases of New World Screwworm in the Province of Darién, announces – COPEG](https://feedsoft.ai/events/37274-the-national-directorate-of-animal-health-in-response-to-the-unusual-increase.md) | +0.9% | +0.3% |

## Sources

- aphis.usda.gov: https://www.aphis.usda.gov/news/agency-announcements/mexico-notifies-united-states-new-world-screwworm-detection

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