Flesh-Eating ‘Screwworm’ Parasites Are Headed to the U.S.

Flesh-Eating ‘Screwworm’ Parasites Are Headed to the U.S. Screwworm parasites primarily infect livestock, but human cases have risen in Central America after the pests escaped containment By Stephanie Pappas edited by Jeanna Bryner Screwworm parasites are getting closer and closer to the U.S. border. The parasites primarily infect cows. Ferrantraite/Getty Images Officials in nine countries…

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