US has reclosed its southern border after a flesh-eating parasite is seen further north in Mexico

The United States has once again closed its southern border to imports of cattle, saying that a flesh eater parasite moved further north in Mexico than before. Mexican president Claudia Sheinbaum was critical on Thursday, suggesting that the United States exaggerated the threat to its parasite beef industry. The pest is the new flywheel fly and the females lay eggs in injury on animals with hot blood. The blown larvae are unusual among flies to feed on living flesh and fluids instead of dead materials. US officials fear that if the fly reaches Texas, its eaten-eaten magnets can cause great economic losses as decades before the United States drove the pest.