parasite

The latest confirmed infestation was found in a sheep in Sutton County, adding to concerns that the flesh-eating parasite is spreading beyond South Texas.

On Monday, state Rep. Don McLaughlin said the parasitic fly that threatens the state's cattle industry was 1 mile away. U.S. officials said that was not yet true.

One agriculture official fighting the flies says it's no foregone conclusion that they'll reach Texas.

The detection in a six-day-old calf marks the first appearance of the parasite in the Mexican state of Tamaulipas.