Mexico's New World Screwworm outbreak halts livestock imports at the southern border as US officials work to prevent the parasitic fly from spreading to American animals.

After a decades-long campaign to beat the parasites down to Panama, they’re speeding back up north.

The New World Screwworm, a parasitic fly, has re-emerged as a potential threat to livestock and humans in the United States.

The U.S. Department of Agriculture announced the restrictions on livestock imports due to the troubling northward spread of ...

Fearing a resurgence of the New World Screwworm parasite in the U.S., the Department of Agriculture block livestock imports from Mexico.

Climate change could be helping the flesh-eating screwworm fly spread, undoing decades of progress — and the USDA isn’t doing ...

U.S. Rep. Tracey Mann said Congress is working to fund the USDA's sterile insect technique in response to a New World ...

U.S. Sens. John Cornyn and Ted Cruz hope to fund an operation to kill the parasitic fly before too much damage is done.

a parasitic fly whose larvae can burrow into the flesh of livestock and often cause fatal wounds. But Wehrbein warned that with just one day left before a U.S. ultimatum expires, "the crisis is ...

While the fly larvae in the open wound is disturbing enough, the infection they cause is even more so. The flies cause myiasis, an infection of flesh-eating maggots that burrow into the skin of ...

The screwworm is getting closer to invading Texas and the United States and it's raising alarms across the state and nation, ...