The U.S. Department of Agriculture has reported the potential detection of flesh-eating screwworm flies in South Texas, according to agency statements.

The screwworm is a parasitic fly whose larvae feed on living tissue of warm-blooded animals, including humans and livestock. The insects can cause severe infections and death if left untreated.

If confirmed through laboratory testing, this would mark the first time the species has crossed the U.S.-Mexico border in recent years. The USDA has not yet provided details about the specific location of the detection or the confirmation process timeline.

Screwworm flies were previously eradicated from the United States through an extensive control program, making any potential reappearance a significant concern for agricultural and public health officials.

The USDA is expected to conduct further testing to verify the initial findings. Agricultural authorities typically respond to such detections with immediate containment and eradication measures to prevent the establishment of breeding populations.