# Screwworm threat halts cattle imports from Mexico | Mississippi State University Extension Service

> The US suspended live animal imports from Mexico on May 11, 2025, halting feeder cattle shipments because screwworm flies were spreading into southern Mexico. Mexican feeder cattle had averaged about 5% of US feedlot placements over the past decade, with up to 20,000 head a week in normal spring and fall seasons.

- Date: 2025-05-16 · published 2025-05-16T12:00:00.000Z
- Category: disease · region US · magnitude medium
- Page: https://feedsoft.ai/events/24639-screwworm-threat-halts-cattle-imports-from-mexico-mississippi-state-university
- Commodities: [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md), [Live Cattle](https://feedsoft.ai/c/LCATTLE.md)

## Why it matters

Feeder placements will fall during peak seasonal import periods, tightening feeder supplies and supporting feeder cattle prices.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| FCATTLE | 2025-07-10 | [US again halts cattle imports from Mexico over flesh-eating screwworms \| Reuters](https://feedsoft.ai/events/23700-us-again-halts-cattle-imports-from-mexico-over-flesh-eating-screwworms-reuters.md) | +1.6% | +7.7% |
| FCATTLE | 2026-05-01 | [More Screwworm Cases in Mexico Threaten Cattle Trade With US](https://feedsoft.ai/events/19652-more-screwworm-cases-in-mexico-threaten-cattle-trade-with-us.md) | -2.0% | -6.8% |
| FCATTLE | 2025-01-13 | [Mexican cattle banned from Texas due to screwworm threat - The Texas Tribune](https://feedsoft.ai/events/26445-mexican-cattle-banned-from-texas-due-to-screwworm-threat-the-texas-tribune.md) | +0.4% | -1.6% |
| 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 | 2025-01-20 | [Deadly parasite halts Mexican cattle imports to U.S.](https://feedsoft.ai/events/26449-deadly-parasite-halts-mexican-cattle-imports-to-u-s.md) | +2.3% | -1.4% |
| LCATTLE | 2025-07-10 | [US again halts cattle imports from Mexico over flesh-eating screwworms \| Reuters](https://feedsoft.ai/events/23700-us-again-halts-cattle-imports-from-mexico-over-flesh-eating-screwworms-reuters.md) | +2.6% | +6.8% |
| LCATTLE | 2026-05-01 | [More Screwworm Cases in Mexico Threaten Cattle Trade With US](https://feedsoft.ai/events/19652-more-screwworm-cases-in-mexico-threaten-cattle-trade-with-us.md) | +0.1% | +1.1% |
| LCATTLE | 2025-01-13 | [Mexican cattle banned from Texas due to screwworm threat - The Texas Tribune](https://feedsoft.ai/events/26445-mexican-cattle-banned-from-texas-due-to-screwworm-threat-the-texas-tribune.md) | +0.4% | +3.2% |

## Sources

- extension.msstate.edu: https://extension.msstate.edu/news/feature-story/2025/screwworm-threat-halts-cattle-imports-mexico

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