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Flesh-eating screwworm: What is it, symptoms, how it returned to US after 60 years

Flesh-eating screwworm: What is it, symptoms, how it returned to US after 60 years Flesh-eating screwworm has been detected in the U.S. after six decades of eradication. The parasite pest was found last week in a 3-week-old calf in Zavala County, Texas. Scientifically known as...