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

The US has fought to keep the New World screwworm, a parasitic fly whose larvae "eat animals alive," out of North America ...

To say the New World Screwworm is a nasty parasite would be an understatement. The flesh-eating scourge that tortures cattle ...

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

USDA will invest $21 million to expand a Mexico facility, aiming to double sterile fly production and strengthen efforts to ...

More than a thousand people who worked to keep American agriculture free of pests and disease have left the federal workforce ...

The U.S. Department of Agriculture (USDA) has suspended livestock imports from Mexico to Texas to prevent the spread of the ...

Screwworm outbreak in Mexico leads to six human cases and a U.S. livestock import ban, threatening public health and cattle ...

The United States will likely resume Mexican cattle imports by year-end, after a halt due to the spread in Mexico of the New ...

The cattle market was disrupted this week by rumors of a return of 24/7 trading and a spoofed notice of a New World Screwworm ...

Ag Secretary Brooke Rollins provided an update on the USDA’s ongoing partnership with Mexico to combat the New World ...