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At COPEG, the Panama – United States Commission for the Eradication and Prevention of Screwworm, approximately 20 million sterilized screwworm flies (Cochliomyia hominivorax) are reared every week to maintain a permanent sterile fly barrier in eastern Panama. The operation also stands ready to supply sterilized screwworms for outbreak response elsewhere. (Photo credit: USDA-APHIS)

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