The map shows the ports of entry affected by the U.S. Agriculture Department’s announcement and the approximate locations of ...

The U.S. has again ceased livestock imports from Mexico related to the presence of the parasitic New World screwworm fly ...

STORY: Hummer, a young mixed-breed dog, walks around a variety of samples until he finds what he’s searching for – the scent ...

The reemergence of the New World screwworm, which poses significant health risks for livestock, has prompted the Department ...

New cases of screwworms on July 8 in Veracruz, Mexico has caused the U.S. to close southern borders to livestock imports.

The U.S. has shut its southern border to livestock imports again after a flesh-eating parasite was found further north in ...

The US has closed its ports of entry to Mexican cattle for fear of the parasitic, flesh-eating worm spreading north.

The U.S. has closed its southern border again to livestock imports, saying that a flesh-eating parasite has moved further ...

Understanding the New World screwworm blowfly and its behavior underscores why it is so dangerous to the livestock industry.

The USDA previously reopened certain ports, such as Douglas, Arizona, after Mexico's efforts to control the screwworm pest.

The United States and Mexico plan to reopen the U.S. border to Mexican cattle imports in July. U.S. agriculture officials had ...

With tail wagging, tongue out and ears perked, Hummer - a young mixed breed dog with a slick black coat - sits down in front of a sample of screwworm scent, promptly accepting praise and treats from ...