Flesh-eating screwworms confirmed in South Texas as USDA deploys strike team and sterile flies while ranchers brace for possible agricultural disaster.

Three more cases of the New World screwworm have been confirmed, including one outside the main cluster in Texas, demonstrating the difficulty of stopping a resurgent pest that could devastate the nation's cattle industry.

Two more cases of the New World screwworm have been confirmed in Texas, demonstrating the difficulty of stopping the spread of a pest that potentially could devastate the nation’s cattle industry.