US has reclosed its southern border after a flesh-eating parasite is seen further north in Mexico
The U.S. has closed its southern border again to livestock imports, saying that a flesh-eating parasite has moved further north in Mexico than previously reported. Mexican President Claudia Sheinbaum was critical Thursday, suggesting that the U.S. is exaggerating the threat to its beef industry from the parasite. The pest is the New World screwworm fly, and females lay eggs in wounds on warm-blooded animals. The larvae that hatch are unusual among flies for feeding on live flesh and fluids instead of dead material. Читать дальше...