# Total Confirmed Screwworm Detections increased to 99 Cases compared to 71 Cases a week ago

> Confirmed New World screwworm detections in the US rose to 99 cases for the week ending November 3, 2026, up from 71 a week earlier. The update tracks active and inactive animal cases under mitigation.

- Date: 2026-11-04 · published 2026-11-05T15:14:14.590Z
- Category: disease · region US · magnitude medium
- Page: https://feedsoft.ai/events/82021-total-confirmed-screwworm-detections-increased-to-99-cases-compared-to-71-cases
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

Rising screwworm cases threaten cattle movement and herd health, tightening feeder and live cattle supply and supporting prices, while prompting movement restrictions from trading partners.

## Read by commodity

- FCATTLE: bullish ▲
- LCATTLE: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2024-12-19 | [U.S. Cattle Industry Faces Challenges Amid Screwworm Detection in Mexico - Beef Web](https://feedsoft.ai/events/26911-u-s-cattle-industry-faces-challenges-amid-screwworm-detection-in-mexico-beef-web.md) | +0.5% | +3.6% |
| LCATTLE | 2023-02-27 | [The National Directorate of Animal Health, in response to the unusual increase in cases of New World Screwworm in the Province of Darién, announces – COPEG](https://feedsoft.ai/events/37274-the-national-directorate-of-animal-health-in-response-to-the-unusual-increase.md) | +0.9% | +0.3% |
| LCATTLE | 2026-06-05 | [Cattle futures rally on first US screwworm detection - CME
						 \| The Cattle Site](https://feedsoft.ai/events/12089-cattle-futures-rally-on-first-us-screwworm-detection-cme-the-cattle-site.md) | +0.4% | -2.4% |
| LCATTLE | 2025-09-22 | [Mexico Confirms Case of New World Screwworm in Nuevo Leon \| Animal and Plant Health Inspection Service](https://feedsoft.ai/events/22806-mexico-confirms-case-of-new-world-screwworm-in-nuevo-leon-animal-and-plant.md) | -0.8% | +0.3% |
| 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% |
| FCATTLE | 2024-12-19 | [U.S. Cattle Industry Faces Challenges Amid Screwworm Detection in Mexico - Beef Web](https://feedsoft.ai/events/26911-u-s-cattle-industry-faces-challenges-amid-screwworm-detection-in-mexico-beef-web.md) | +0.9% | +6.4% |
| FCATTLE | 2026-06-05 | [Cattle futures rally on first US screwworm detection - CME
						 \| The Cattle Site](https://feedsoft.ai/events/12089-cattle-futures-rally-on-first-us-screwworm-detection-cme-the-cattle-site.md) | +1.8% | +2.0% |
| FCATTLE | 2025-09-22 | [Mexico Confirms Case of New World Screwworm in Nuevo Leon \| Animal and Plant Health Inspection Service](https://feedsoft.ai/events/22806-mexico-confirms-case-of-new-world-screwworm-in-nuevo-leon-animal-and-plant.md) | -0.6% | +3.6% |

## Sources

- cattlerange.com: https://www.cattlerange.com/articles/2026/11/new-world-screwworm-update-for-week-ending-november-3-2026

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