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New World Screwworm Detected in Mexico's Cattle Shipment

9/26/2025

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Summary

Story summary

Mexico's Ministry of Agriculture confirmed New World screwworm in an 8-month-old calf in Nuevo León.
The calf came from a shipment from an outbreak area; one of 100 cattle was infected.
Berdegué cited early detection and monitoring after talks with U.S. Secretary Brooke Rollins.
U.S. Department of Agriculture (USDA) invested $30 million to boost sterile fly production and border monitoring.

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Story summary

Mexico's Ministry of Agriculture confirmed New World screwworm in an 8-month-old calf in Nuevo León.
The calf came from a shipment from an outbreak area; one of 100 cattle was infected.
Berdegué cited early detection and monitoring after talks with U.S. Secretary Brooke Rollins.
U.S. Department of Agriculture (USDA) invested $30 million to boost sterile fly production and border monitoring.