When the US Department of Agriculture reported last week that it detected a case of New World screwworm in a Texas calf, ecologist Jeremy Radachowsky was not surprised.

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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…

Scientists expect a handful of new cases could pop up in the coming days and weeks

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The New World screwworm fly is threatening the $113 billion U.S. cattle industry for the first time in more than half a century, as officials race...

The U.S. Department of Agriculture says the United States' food supply is not at risk after confirming two more cases of the New World screwworm.

The screwworm, a flesh-eating parasite and longtime foe of American ranchers, is back in US cattle after decades.

The number of animals infested with a parasitic fly whose larvae feast on living flesh has risen to five, according to the US Department of Agriculture.

"Ivermectin kills New World screwworms in both humans and animals."

The USDA has reported more cases of the New World screwworm, including one outside of Texas.

Five cases of the New World screwworm parasite have been found in Texas and New Mexico.

When the US Department of Agriculture reported last week that it detected a case of New World screwworm in a Texas calf, ecologist Jeremy Radachowsky was not surprised.