The United States has robust surveillance and monitoring systems in place to detect screwworm cases in livestock, wildlife, other animals, and people.
NWS Trapping: Southern Border
USDA has deployed over 100 NWS-specific traps and lures across high-risk areas of U.S. border States and is leveraging thousands of fruit fly/insect traps all along the Southern border. Tens of thousands of Cochliomyia flies from traps in all locations have been submitted to our National Veterinary Services Laboratories (NVSL) for identification, with no NWS detections to date.
Learn About NWS Surveillance on the Southern Border (201.81 KB)
Wildlife Monitoring: Texas
We also examine all wildlife captured in high-risk counties in Texas for signs of NWS infestation. To date, more than 6,600 wild animals across 28 species have been examined, with no evidence of NWS found.
Cross-Border Response: Mexico
USDA continues to work with Mexico’s agriculture authority, SENASICA, to implement the collaborative NWS Action Plan and guide trapping, surveillance, and movement protocols there. Although Mexico continues to confirm new cases in the far southern part of the country, there has been no significant northward expansion in the past several months.
