# Screwworm control and the US cattle border

Sterile-fly production has not kept pace with the New World screwworm outbreak. The shortage contributed to a US closure of the Mexican cattle border starting in May 2025.

Published 2026-11-11 by the Feedsoft Markets Desk. Covers: LCATTLE, FCATTLE.

Video (34s): https://feedsoft.ai/media/social/102/youtube-54c16773fd.mp4

## Transcript

- **150 million sterile flies a week** That's current combined production in Mexico and Panama, according to the report.
- **A historical comparison** The 1960s eradication campaign used 500 million sterile flies a week.
- **Production lagged the outbreak** The shortage contributed to a US closure of the Mexican cattle border starting in May 2025.
- **Why cattle buyers watch** Screwworm cases and cattle-import restrictions can disrupt cross-border cattle flows.

Full analysis: https://feedsoft.ai/events/89422-how-the-us-was-left-exposed-to-the-flesh-eating-screwworm-years-into-the

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