# Screwworm Cases Surge Across Southwest: What It Means and How to Respond

> USDA is maintaining a round-the-clock response as New World screwworm activity rises in parts of the US Southwest. Officials say warm, wet conditions and recent rainfall in New Mexico, Arizona, and Texas favor fly activity, and emphasize surveillance, trapping, and prompt reporting.

- Date: 2026-11-06 · published 2026-11-06T18:30:17.178Z
- Category: disease · region United States · magnitude medium
- Page: https://feedsoft.ai/events/84685-screwworm-cases-surge-across-southwest-what-it-means-and-how-to-respond
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

Further spread could disrupt livestock movement and trade and raise animal-health and control costs for producers. If infestations affect cattle, risks to herd productivity and beef supply could support cattle prices, though the article reports no quantified production losses.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2026-01-03 | [U.S. livestock: Cattle futures surge as second screwworm case announced \| The Western Producer](https://feedsoft.ai/events/21012-u-s-livestock-cattle-futures-surge-as-second-screwworm-case-announced-the.md) | +0.0% | +1.1% |
| LCATTLE | 2025-05-11 | [US suspends Mexican cattle, horse and bison imports over screwworm pest \| Reuters](https://feedsoft.ai/events/24638-us-suspends-mexican-cattle-horse-and-bison-imports-over-screwworm-pest-reuters.md) | +0.3% | +4.8% |
| LCATTLE | 2025-09-01 | [USDA ramps up screwworm fight as cattle futures surge](https://feedsoft.ai/events/23460-usda-ramps-up-screwworm-fight-as-cattle-futures-surge.md) | -1.4% | -3.5% |
| LCATTLE | 2026-06-29 | [Dangerous Heat and Screwworm Cases Mean Cattle Prices Are Still Bullish. Hog Prices Need a Kick Higher.](https://feedsoft.ai/events/18952-dangerous-heat-and-screwworm-cases-mean-cattle-prices-are-still-bullish-hog.md) | -4.5% | -11.9% |
| LCATTLE | 2026-02-24 | [Border closure over New World Screwworm threat ripples across U.S. beef industry](https://feedsoft.ai/events/20539-border-closure-over-new-world-screwworm-threat-ripples-across-u-s-beef-industry.md) | -3.3% | -4.4% |
| FCATTLE | 2026-01-03 | [U.S. livestock: Cattle futures surge as second screwworm case announced \| The Western Producer](https://feedsoft.ai/events/21012-u-s-livestock-cattle-futures-surge-as-second-screwworm-case-announced-the.md) | +1.3% | +2.9% |
| FCATTLE | 2025-05-11 | [US suspends Mexican cattle, horse and bison imports over screwworm pest \| Reuters](https://feedsoft.ai/events/24638-us-suspends-mexican-cattle-horse-and-bison-imports-over-screwworm-pest-reuters.md) | -0.4% | +4.6% |
| FCATTLE | 2025-09-01 | [USDA ramps up screwworm fight as cattle futures surge](https://feedsoft.ai/events/23460-usda-ramps-up-screwworm-fight-as-cattle-futures-surge.md) | -1.0% | -2.4% |

## Sources

- drovers.com: https://www.drovers.com/news/screwworm-cases-surge-across-southwest-what-it-means-and-how-respond

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