# The historical impact of New World screwworm outbreaks in U.S. | Ag Proud

> The article reviews the history of New World screwworm in the US, from its spread into the country in the 1950s to the first major Florida infestation in 1957. It describes the heavy costs of treatment, lost production and USDA eradication efforts over more than 70 years.

- Date: 2025-04-22 · published 2025-04-22T12:00:00.000Z
- Category: disease · region US · magnitude low
- Page: https://feedsoft.ai/events/25085-the-historical-impact-of-new-world-screwworm-outbreaks-in-u-s-ag-proud
- Commodities: [Live Cattle](https://feedsoft.ai/c/LCATTLE.md), [Feeder Cattle](https://feedsoft.ai/c/FCATTLE.md)

## Why it matters

The ongoing eradication effort adds cost and supply risk for the cattle sector, but the article contains no new market-moving event.

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| LCATTLE | 2023-12-21 | [USDA protects livestock producers against New World screwworm outbreaks \| The National Provisioner](https://feedsoft.ai/events/32619-usda-protects-livestock-producers-against-new-world-screwworm-outbreaks-the.md) | +0.7% | +2.3% |
| LCATTLE | 2024-09-16 | [Belize on High Alert for New World Screwworm Following Outbreak in Honduras](https://feedsoft.ai/events/28247-belize-on-high-alert-for-new-world-screwworm-following-outbreak-in-honduras.md) | +1.6% | +4.6% |
| LCATTLE | 2024-05-09 | [Nicaragua reports screwworm outbreak in cattle
						 \| The Cattle Site](https://feedsoft.ai/events/30190-nicaragua-reports-screwworm-outbreak-in-cattle-the-cattle-site.md) | +0.6% | +2.4% |
| LCATTLE | 2026-07-19 | [What the U.S. can learn from Mexico's handling of the screwworm outbreak - VPM](https://feedsoft.ai/events/18298-what-the-u-s-can-learn-from-mexico-s-handling-of-the-screwworm-outbreak-vpm.md) | -1.4% | -2.8% |
| 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% |
| FCATTLE | 2023-12-21 | [USDA protects livestock producers against New World screwworm outbreaks \| The National Provisioner](https://feedsoft.ai/events/32619-usda-protects-livestock-producers-against-new-world-screwworm-outbreaks-the.md) | -0.7% | +2.6% |
| FCATTLE | 2024-09-16 | [Belize on High Alert for New World Screwworm Following Outbreak in Honduras](https://feedsoft.ai/events/28247-belize-on-high-alert-for-new-world-screwworm-following-outbreak-in-honduras.md) | +1.2% | +3.2% |
| FCATTLE | 2026-07-19 | [What the U.S. can learn from Mexico's handling of the screwworm outbreak - VPM](https://feedsoft.ai/events/18298-what-the-u-s-can-learn-from-mexico-s-handling-of-the-screwworm-outbreak-vpm.md) | -0.2% | -1.5% |

## Sources

- agproud.com: https://www.agproud.com/articles/61428-the-historical-impact-of-new-world-screwworm-outbreaks-in-us

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