The USDA said the only animal affected was a 3-week-old calf in Zavala County, Texas, after larvae were identified in its umbilical area.

The Department of Agriculture flagged a possible case of New World Screwworm or NWS in South Texas, sparking fears about the flesh-eating fly coming to the US.

The U.S. Department of Agriculture has confirmed that the New World screwworm fly has arrived in south Texas.

The flesh-eating larvae has threatened the nation's cattle industry