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

America has stopped taking animals from northern Mexico. This is because of the New World Screwworm fly. This fly is harmful to animals. It lays eggs in their wounds. The US wants to prevent the fly ...

New cases of the New World Screwworms in Veracruz, Mexico have caused the U.S. Department of Agriculture to once again close southern borders to livestock days after reopening them. On ...