# Mexico Confirms Case of New World Screwworm in Nuevo Leon | Animal and Plant Health Inspection Service

> Mexico's SENASICA confirmed a New World screwworm case in Sabinas Hidalgo, Nuevo León, about 70 miles from the U.S. border, the northernmost detection of the outbreak. The infected 8-month-old cow had been moved to a certified feedlot from southern Mexico. USDA Secretary Rollins said the U.S. would act unilaterally to protect its borders.

- Date: 2025-09-22 · published 2025-09-22T12:00:00.000Z
- Category: disease · region Mexico · magnitude high
- Page: https://feedsoft.ai/events/22806-mexico-confirms-case-of-new-world-screwworm-in-nuevo-leon-animal-and-plant
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

A detection this close to the border raises the risk of a further closure of Mexican cattle imports, which would tighten U.S. feeder and fed cattle supplies and support prices.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2024-11-24 | [Mexico Notifies United States of New World Screwworm Detection \| Animal and Plant Health Inspection Service](https://feedsoft.ai/events/27344-mexico-notifies-united-states-of-new-world-screwworm-detection-animal-and-plant.md) | +1.6% | +3.8% |
| LCATTLE | 2023-10-23 | [Mexico boosts controls on cattle after new screwworm case found near US border in Nuevo Leon](https://feedsoft.ai/events/33561-mexico-boosts-controls-on-cattle-after-new-screwworm-case-found-near-us-border.md) | +0.4% | -3.5% |
| 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% |
| LCATTLE | 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) | +1.4% | +3.8% |
| LCATTLE | 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% | +3.4% |
| FCATTLE | 2024-11-24 | [Mexico Notifies United States of New World Screwworm Detection \| Animal and Plant Health Inspection Service](https://feedsoft.ai/events/27344-mexico-notifies-united-states-of-new-world-screwworm-detection-animal-and-plant.md) | +1.0% | +0.9% |
| FCATTLE | 2023-10-23 | [Mexico boosts controls on cattle after new screwworm case found near US border in Nuevo Leon](https://feedsoft.ai/events/33561-mexico-boosts-controls-on-cattle-after-new-screwworm-case-found-near-us-border.md) | -2.0% | -5.5% |
| 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% |

## Sources

- aphis.usda.gov: https://www.aphis.usda.gov/news/agency-announcements/mexico-confirms-case-new-world-screwworm-nuevo-leon

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