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 closed its southern border again to livestock imports, saying a flesh-eating parasite has moved further north in ...

The New World screwworm fly, a flesh-eating parasite, is making a concerning comeback. Learn about the screwworm's threat to ...

The US has halted livestock imports from Mexico as the New World screwworm fly spreads closer to the southern border. The parasitic insect poses a threat to livestock and, in rare cases, humans. US ...

The U.S. closes its southern border due to New World screwworm fly, a flesh-eating parasite that has decimated cattle ranches ...

The U.S. Department of Agriculture announced the border closure after Mexico reported a case of a flesh-eating parasite ...

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

The new world screw worm attacks animals by burrowing into wounds and feeding on live tissue. Now, with a confirmed case just ...

The U.S. Department of Agriculture works to neutralize -- again -- the flesh-eating larva of the New World Screwworm fly.