# More Screwworm Cases in Mexico Threaten Cattle Trade With US

> New World screwworm cases are accelerating in Mexico, with almost 700 detections reported this month according to USDA. The US has largely kept its live cattle import halt from Mexico in place since last fall.

- Date: 2026-05-01 · published 2026-05-01T12:00:00.000Z
- Category: disease · region Mexico · magnitude medium
- Page: https://feedsoft.ai/events/19652-more-screwworm-cases-in-mexico-threaten-cattle-trade-with-us
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

A prolonged border closure keeps feeder cattle supply tight for US feedlots, supporting cattle and beef prices while the import halt continues.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Linked price moves

| Commodity | Date | Window | Change % | z-score | Why linked |
| --- | --- | --- | --- | --- | --- |
| LCATTLE | 2026-05-04 | 1 | +2.1% | 3.2 | Accelerating screwworm detections in Mexico (~700 this month) reinforce the import halt, keeping feeder supply tight and bullish for cattle futures. |

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2024-11-28 | [Screwworms impacting cattle trade](https://feedsoft.ai/events/27348-screwworms-impacting-cattle-trade.md) | +0.7% | +3.7% |
| LCATTLE | 2026-01-01 | [Flesh-eating worm in Mexico is upending cross-border cattle trade](https://feedsoft.ai/events/21453-flesh-eating-worm-in-mexico-is-upending-cross-border-cattle-trade.md) | +1.2% | +1.9% |
| 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% |
| LCATTLE | 2024-11-25 | [US suspends Mexican cattle imports after New World screwworm case \| Reuters](https://feedsoft.ai/events/27346-us-suspends-mexican-cattle-imports-after-new-world-screwworm-case-reuters.md) | +1.6% | +3.8% |
| LCATTLE | 2025-05-16 | [Screwworm threat halts cattle imports from Mexico \| Mississippi State University Extension Service](https://feedsoft.ai/events/24639-screwworm-threat-halts-cattle-imports-from-mexico-mississippi-state-university.md) | +1.4% | +6.7% |
| FCATTLE | 2024-11-28 | [Screwworms impacting cattle trade](https://feedsoft.ai/events/27348-screwworms-impacting-cattle-trade.md) | -1.5% | +1.0% |
| FCATTLE | 2026-01-01 | [Flesh-eating worm in Mexico is upending cross-border cattle trade](https://feedsoft.ai/events/21453-flesh-eating-worm-in-mexico-is-upending-cross-border-cattle-trade.md) | +3.5% | +2.9% |
| 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% |

## Sources

- bloomberg.com: https://www.bloomberg.com/news/articles/2026-04-24/more-screwworm-cases-in-mexico-threaten-cattle-trade-with-us

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