The U.S. has blocked imports of live cattle, horses, and bison through southern border ports following the resurgence in Mexico of the New World Screwworm, a parasitic fly that infects animals and ...
The U.S. government is combating a potential invasion of flesh-eating New World screwworm maggots with a multimillion-dollar plan Getty The U.S. government is combating a potential invasion of ...
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