# Flesh-eating screwworm confirmed in three US states as cases surge to 116

> USDA's Animal and Plant Health Inspection Service has confirmed 116 New World screwworm infestations in Texas, New Mexico and Arizona as of November 5, 2026, with 56 still active. Most cases involve cattle, horses, sheep and pets, and two wildlife cases in elk have been confirmed in Texas. It is the first detection across three mainland states since the late 1970s.

- Date: 2026-11-14 · published 2026-11-14T21:14:21.352Z
- Category: disease · region US · magnitude medium
- Page: https://feedsoft.ai/events/99991-flesh-eating-screwworm-confirmed-in-three-us-states-as-cases-surge-to-116
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

Spread of the parasite threatens US cattle health and can restrict animal movements and trade, tightening cattle supplies and supporting cattle prices. The outbreak also reinforces the case for keeping the Mexican border closed, which limits feeder cattle supply.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2026-06-03 | [Flesh-eating screwworm confirmed in Texas calf as parasite crosses border from Mexico \| Reuters](https://feedsoft.ai/events/18763-flesh-eating-screwworm-confirmed-in-texas-calf-as-parasite-crosses-border-from.md) | +0.0% | -0.7% |
| 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 | 2026-06-04 | [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) | +0.6% | -1.0% |
| LCATTLE | 2025-10-01 | [Mexico sees 32% jump in flesh-eating screwworm cases since August as cases move north \| Reuters](https://feedsoft.ai/events/22368-mexico-sees-32-jump-in-flesh-eating-screwworm-cases-since-august-as-cases-move.md) | -0.1% | +0.2% |
| LCATTLE | 2025-06-02 | [How flesh-eating screwworms in cattle could raise US beef prices \| Reuters](https://feedsoft.ai/events/24157-how-flesh-eating-screwworms-in-cattle-could-raise-us-beef-prices-reuters.md) | +3.1% | +3.0% |
| FCATTLE | 2026-06-03 | [Flesh-eating screwworm confirmed in Texas calf as parasite crosses border from Mexico \| Reuters](https://feedsoft.ai/events/18763-flesh-eating-screwworm-confirmed-in-texas-calf-as-parasite-crosses-border-from.md) | +1.6% | +4.5% |
| FCATTLE | 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) | +1.8% | +2.0% |
| 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% |

## Sources

- dagens.com: https://www.dagens.com/us/flesh-eating-screwworm-confirmed-in-three-us-states-as-cases-surge-to-116

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