USDA Secretary Announces Agreement with Mexico on Beef Parasite

May 05, 2025

Secretary of Agriculture Brooke Rollins announced Monday that Mexico had come to an agreement with the U.S. for handling the New World screwworm. Over the weekend, the USDA secretary threatened to halt beef imports from Mexico if the country did not take more steps to respond to the spread of the New World Screwworm. This screwworm is a deadly parasite that spreads by burrowing into the living flesh of an animal. This parasite has spread to humans in rare cases.

In her letter to her Mexican counterpart, Secretary Rollins wrote, “If these issues are not resolved by Wednesday, April 30, USDA will restrict the importation of animal commodities, which consist of live cattle, bison, and equine originating from or transiting Mexico to protect the interest of the agriculture industry in the United States.”

“Every delay in granting full operational authority and eliminating customs barriers undermines our collective ability to carry out this emergency response,” the USDA secretary added.

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Video: Research in Action | Swine Cluster 4 - Activity 8: Precision Feeding with Dr. Aline Remus

Research in Action is a video series from Swine Innovation Porc that highlights the people and projects driving innovation in Canada's pork sector.

In this episode, Dr. Aline Remus (Agriculture and Agri-Food Canada) explains how precision feeding is helping producers improve efficiency, reduce feed costs and lower environmental impacts while supporting animal health and welfare.

As part of Swine Cluster 4 - Activity 8, this research is advancing precision livestock farming by tailoring nutrition to the needs of individual pigs or groups of pigs. The project aims to reduce feed costs, decrease greenhouse gas emissions and nutrient losses, and develop practical precision feeding systems that producers can confidently adopt on-farm.

By bringing together researchers from across Canada and around the world, this work is helping transform innovative research into practical solutions for a more sustainable and competitive Canadian pork sector.