June 5, 2026

UNL experts monitoring New World screwworm following Texas detection

new-world-screwworm
USDA Animal and Plant Health Inspection Service

USDA Animal and Plant Health Inspection Service

The Institute of Agriculture and Natural Resources at the University of Nebraska-Lincoln is aware of the confirmation of New World screwworm in Texas earlier this month and is monitoring developments related to the parasite.  

Screwworm, the larval stage New World screwfly, has not been detected in Nebraska. University experts are working with partners including the Nebraska Department of Agriculture, the Nebraska Cattlemen and the U.S. Department of Agriculture, to stay informed and support ongoing efforts to monitor the pest.   

“The Institute of Agriculture and Natural Resources is prepared to support efforts to detect and understand New World screwworm in Nebraska,” said Tiffany Heng-Moss, NU vice president and Harlan Vice Chancellor for IANR. 

“Early and effective coordination among agencies is key to responding effectively to pest and disease threats. The university is already working closely with local, state and federal partners and will continue to do so.”  

The Nebraska Veterinary Diagnostic Lab at UNL is coordinating with the USDA and other partners to provide diagnostic support. Lab faculty and staff are also available to provide input on the diagnostic cases or to answer questions from Nebraska veterinarians. Nebraska Extension, the UNL Department of Entomology and the UNL Department of Animal Science are also monitoring New World screwworm and are prepared to provide information and support to Nebraska producers as needed.  

Cattle producers should follow guidance shared by the Nebraska Department of Agriculture and the USDA.  

If you encounter a fly or larva that that you think may be New World screwfly or screwworm, you can reach to the your local veterinarian, Nebraska Department of Agriculture, USDA, or your local Nebraska Extension office.