# Screwworm spreads to third state as U.S. cases reach 74

> New world screwworm has been confirmed in Arizona, joining Texas and New Mexico, with the national case count at 74 and 21 still active. USDA released roughly a million sterile flies over Cochise County, and a sterile fly dispersal facility is planned for Douglas County. Texas A&M also received about $4 million for a genetic study of the outbreak.

- Date: 2026-11-02 · published 2026-11-02T21:20:11.942Z
- Category: disease · region US · magnitude medium
- Page: https://feedsoft.ai/events/76128-screwworm-spreads-to-third-state-as-u-s-cases-reach-74
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

Spread into new cattle-producing states raises the risk of movement restrictions and herd losses, which tightens cattle supply and supports prices. Continued restrictions on Mexican imports also keep US supplies tight.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2026-06-09 | [Texas screwworm case drives cattle rally](https://feedsoft.ai/events/18947-texas-screwworm-case-drives-cattle-rally.md) | +0.7% | -2.1% |
| LCATTLE | 2026-06-25 | [The screwworm parasite continues to spread in Texas, threatening cattle and wildlife : NPR](https://feedsoft.ai/events/18767-the-screwworm-parasite-continues-to-spread-in-texas-threatening-cattle-and.md) | -2.9% | -10.1% |
| 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 | 2026-06-05 | [US races to contain flesh-eating parasite screwworm, reports no further cases](https://feedsoft.ai/events/18948-us-races-to-contain-flesh-eating-parasite-screwworm-reports-no-further-cases.md) | +0.4% | -2.4% |
| LCATTLE | 2026-03-27 | [Screwworm Fears are Reshaping the U.S. Cattle Feeding Industry](https://feedsoft.ai/events/20119-screwworm-fears-are-reshaping-the-u-s-cattle-feeding-industry.md) | +2.5% | +5.6% |
| FCATTLE | 2026-06-09 | [Texas screwworm case drives cattle rally](https://feedsoft.ai/events/18947-texas-screwworm-case-drives-cattle-rally.md) | +3.1% | +3.2% |
| FCATTLE | 2026-06-25 | [The screwworm parasite continues to spread in Texas, threatening cattle and wildlife : NPR](https://feedsoft.ai/events/18767-the-screwworm-parasite-continues-to-spread-in-texas-threatening-cattle-and.md) | -2.4% | -7.8% |
| 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% |

## Sources

- farmprogress.com: https://www.farmprogress.com/livestock/screwworm-spreads-to-third-state-as-u-s-cases-reach-74

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