US-Mexico agree to ramp up New World Screwworm eradication efforts Ports will remain open to livestock imports5 May 2025 5 May 2025 1 minute read 1 minute read By: By: Global Ag Media North AmericaUS Secretary of Agriculture Brooke Rollins announced on Friday that Mexico has committed to eliminate restrictions on USDA aircraft, and waive customs duties on eradication equipment aiding in the response to the spread of New World Screwworm (NWS). This agreement follows Secretary Rollins’ letter to Mexico Secretary of Agriculture Julio Antonio Berdegue Sacristan on Saturday pushing for a resolution of the restrictions. “I am happy to share Mexico has continued to partner in emergency efforts to eradicate the New World Screwworm," Rollins said. "I thank our frontline USDA staff and their counterparts in Mexico for their work to ensure the screwworm does not harm our livestock industry." New World Screwworm (NWS) is a deadly parasitic fly that infests warm-blooded animals, causing severe wounds and complications that can lead to death.