# Texas Ranchers Brace as New World Screwworm Returns to US Soil After 6 Decades

> Texas ranchers are preparing for New World screwworm after a confirmed case in a 3-week-old beef calf in south Texas. USDA officials say surveillance is underway and a couple of additional cases are being investigated but do not yet show the severity of the first one.

- Date: 2026-06-04 · published 2026-06-04T12:00:00.000Z
- Category: disease · region US · magnitude medium
- Page: https://feedsoft.ai/events/12087-texas-ranchers-brace-as-new-world-screwworm-returns-to-us-soil-after-6-decades
- Commodities: [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md), [Live Cattle](https://feedsoft.ai/c/LCATTLE.md)

## Why it matters

Disease spread in Texas cattle could reduce herd numbers and movement, supporting cattle prices while raising costs for ranchers. Further confirmed cases would be a key price driver.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| FCATTLE | 2023-10-22 | [A screwworm fly that bedeviled cattle ranchers decades ago has returned to Texas](https://feedsoft.ai/events/33562-a-screwworm-fly-that-bedeviled-cattle-ranchers-decades-ago-has-returned-to-texas.md) | -2.0% | -5.5% |
| FCATTLE | 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) | +1.0% | +0.9% |
| FCATTLE | 2026-06-04 | [New World Screwworm Confirmed in US - CME Feeder Cattle Futures Surge After Early Slide](https://feedsoft.ai/events/12085-new-world-screwworm-confirmed-in-us-cme-feeder-cattle-futures-surge-after-early.md) | +3.4% | +5.3% |
| FCATTLE | 2026-06-04 | [US screwworm case puts ranchers on alert, rallies cattle prices By Reuters](https://feedsoft.ai/events/12084-us-screwworm-case-puts-ranchers-on-alert-rallies-cattle-prices-by-reuters.md) | +3.4% | +5.3% |
| FCATTLE | 2026-01-06 | [As Screwworm Inches Closer, When Could the U.S. Reopen the Southern Border to Cattle Imports? - Drovers](https://feedsoft.ai/events/21009-as-screwworm-inches-closer-when-could-the-u-s-reopen-the-southern-border-to.md) | +0.9% | +2.5% |
| LCATTLE | 2023-10-22 | [A screwworm fly that bedeviled cattle ranchers decades ago has returned to Texas](https://feedsoft.ai/events/33562-a-screwworm-fly-that-bedeviled-cattle-ranchers-decades-ago-has-returned-to-texas.md) | +0.4% | -3.5% |
| 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 | 2025-08-15 | [In Texas cattle country, ranchers brace for flesh-eating screwworms \| Reuters](https://feedsoft.ai/events/23280-in-texas-cattle-country-ranchers-brace-for-flesh-eating-screwworms-reuters.md) | +1.1% | -0.1% |

## Sources

- dtnpf.com: https://www.dtnpf.com/agriculture/web/ag/livestock/article/2026/06/04/texas-ranchers-brace-new-world-us-6

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